Biosafety

Biosafety

Those who handle microorganisms or biological agents need to consider biosafety in their work. This also applies to those who handle blood, other body fluids, or tissue samples that may pose a risk of infection. Biosafety involves taking safety measures to protect people and the environment from unintended exposure to pathogens and genetically modified microorganisms (GMM).

The Swedish Work Environment Authority sets requirements for how work should be conducted safely to protect human health in the provisions Infectious Risks (Smittrisker) AFS 2018:4, and to protect health and the environment in the provisions Contained use of GMM (Innesluten användning av GMM) AFS 2011:2.

Biosafety Committee at LiU and Region Östergötland

Linköping University and Region Östergötland have a joined biosafety committee. The committee provides consolidated expertise for central coordination and advisory on biosafety issues that do not have an obvious solution through existing policy documents and guidelines. The biosafety committee shall advocate for safe and environmentally friendly handling of infectious and genetically modified substances and materials within the organisations, as well as monitor compliance with applicable legislation and guidelines.

Provisions

General provisions and regulations

Provisions about infectious risks, AFS 2018:4, from the Swedish Work Environment Authority (in Swedish)

Provisions about contained use of genetically modified microorganisms, AFS 2011:2Eng, from the Swedish Work Environment Authority

Regulations on contained use of GMM, 2000:271, from the Riksdag (in Swedish)

Provisions about the design of the workplace, AFS 2020:1, from the Swedish Work Enviroonment Authority (in Swedish)

Contact biosafety coordinator

Photo of Lab-safety

Lab-safety

Contact us for support for all campuses at Linköping University. Use labsafety@liu.se to reach coordinators for laboratory safety, biosafety, fire safety and chemical management at LiU.

More about biosafety

Work with infectious agents

Work with infectious agents refers to the intentional use of microorganisms, such as viruses or bacteria, that can cause infection in humans, in research or teaching activities. When working with infectious agents, the provisions Infection risks (Smittrisker) AFS 2018:4 of the Swedish Work Environment Authority must be followed. The provisions provide information on the risk classes (risk class 2-4) into which infectious agents are categorized based on the severity of the diseases they can cause, as well as the protective measures that must be taken at different containment levels.

When working with infectious agents that are also genetically modified microorganisms (GMMs), the provisions Enclosed Use of GMMs (Innesluten användning av GMM) AFS 2011:2 must also be complied with.

Considerations for intentional work with infectious agents

  • Always contact LiU's biosafety coordinator well in advance before planning to use infectious agents or GMMs, see contact details on the right.
  • Notification to the Swedish Work Environment Authority for infectious agents. Read more about the notification requirements in the section below. It's important to note that notification of infectious agents must be submitted no later than 30 days before the work starts.
  • Risk assessment. A risk assessment must be conducted for all work with infectious agents, read more about this here. The risk assessment determines the protective measures required to perform the work safely and the containment level at which the work should be conducted. The provisions Infection risks (Smittrisker) AFS 2018:4 describe the necessary protective measures for each containment level.
  • Facilities. Are there facilities adapted to the containment level required for the planned work with infectious agents? Adapting facilities can take a long time, so it needs to be planned well in advance. If facilities are shared with other research groups, it is important to coordinate procedures and inform all relevant parties about the planned activities. The provisions Infection risks (Smittrisker) AFS 2018:4 specify the requirements for facilities at each containment level.
  • Handling and safety instructions must be available in written form for work with infectious agents. This includes both procedures for normal conditions and for unexpected events.
  • Emergency response and accidents. Plan in advance for unexpected events such as spills and ventilation failure. For accidents involving risk of infection through needlestick, cut, or splash injuries, refer to LiU's procedure describing measures to be taken immediately following the incident and afterwards.
  • Waste management. Find out the requirements for waste management regarding the infectious agents and other materials to be used in the work. Guidelines for waste management are described in the Laboratory Safety Manual under Laboratory waste.

Notification of infectious agents

All work with and storage of infectious agents in risk class 2-4 must be notified to the Swedish Work Environment Authority according to the provisions Infection Risks (AFS 2018:4).

The image below summarizes the requirements for notification and permits for infectious agents and GMMs.

Always contact LiU's biosafety coordinator well in advance before planning to use infectious agents, see contact details on the right.

Notification to the Swedish Work Environment Authority must be submitted 30 days before the work begins. Notification is also required for the relocation of activities, to be submitted no later than 30 days before the relocation. More information about the notification of infectious agents can be found at the Swedish Work Environment Authority's website, where a cover sheet (form) for the notification is also available.

The following elements should be included in the notification:

  • Completed cover sheet with information about the use, facilities, and description of waste management.
  • Risk assessment
  • Written handling and safety instructions

LiU's biosafety coordinator provides information and advice regarding the notification and will also submit the notification to the Swedish Work Environment Authority (see contact details on the right). The notification/application and associated documents should be registered in the registry of the respective institution.

Work with GMM

Work with GMM refers to the use of genetically modified microorganisms (GMMs) in research or teaching activities. A GMM is a microorganism whose genetic material has been altered in a way that does not occur naturally (through mating or natural recombination). Definitions and concepts related to GMMs are explained in regulation SFS 2000:271.

When working with GMMs, the provisions Enclosed Use of GMMs (Innesluten användning av GMM) AFS 2011:2 must be followed. For GMMs that are also infectious agents, both AFS 2011:2 and Infection Hazards AFS 2018:4 apply.

Considerations when working with GMM

  • Always contact LiU's biosafety coordinator well in advance before planning to start using GMM. See contact details to the right.
  • Notification or permission application to the Swedish Work Environment Authority for GMM. Read more about the requirements for notification and permission at the Swedish Work Environment Authority (Arbetsmiljöverket). It is important to note that the Swedish Work Environment Authority has a processing time that can be several months for permission cases.
  • Risk assessment. A risk assessment must be conducted for all work involving GMM. You can find more information about it here. The risk assessment determines the protective measures needed to perform the work safely and the containment level required. The provisions AFS 2011:2 and AFS 2018:4 describe the required protective measures for each containment level.
  • Facilities. Are there facilities adapted to the required containment level for the planned work available and where the work will be performed? Adapting facilities can take a long time, so it should be planned well in advance. If facilities are shared with other research groups, it is important to coordinate procedures and inform all parties involved about the planned activities. The provisions AFS 2011:2 describe the requirements for facilities for each containment level.
  • Handling and safety instructions must be available in written form when working with infectious GMM. This includes both procedures for normal conditions and unexpected events.
  • Emergency response and accidents. Plan in advance for unexpected events such as spills and ventilation failure. For accidents involving risk of infection due to needlestick, cutting, or splashing injuries, refer to LiU's procedure that describes immediate and post-incident actions.
  • Waste management. Find out the requirements for waste management regarding the GMMs and other materials to be used in the work. Guidelines for waste management are described in the Laboratory Safety Manual under Laboratory waste.

Notification of GMM

All contained use of genetically modified microorganisms (GMM) must be notified to the Swedish Work Environment Authority. In some cases, permission from the Swedish Work Environment Authority is required.

Always contact LiU's biosafety coordinator well in advance before planning to start using GMM.

Forms and more information regarding the notification and permission application for GMM are available from the Swedish Work Environment Authority.

GMM is categorized into different risk groups based on the risk they pose to human health and the environment:

F-activities: involve negligible or no risk of harm to human health or the environment, work is conducted at containment level 1. F-activities require notification to the Swedish Work Environment Authority.

Examples of F-activities:

  • Transfection of non-pathogenic E. coli with a plasmid encoding GFP.
  • S. cerevisiae (baker's yeast) is used for cloning DNA fragments encoding non-toxic enzymes.

L-activities: involve low risk of harm to human health or the environment, work is conducted at containment level 2. L-activities require notification to the Swedish Work Environment Authority.

Examples of L-activities:

  • Infection of cultured cells with a viral vector (risk class 2) for expression of desired proteins that do not pose a risk to health or the environment.
  • Studies of virulence factors in Salmonella enteritidis by making deletions in coding genes.

R-activities: involve moderate or high risk of harm to human health or the environment. Work with GMM at containment level 3 and 4, as well as large-scale work at containment level 2, are categorised as R-activities. R-activities require permission for the operation.

Examples of R-activities:

  • Introduction of a plasmid encoding green fluorescent protein (GFP) into M. tuberculosis to produce bacteria expressing GFP.
  • Transfection of cell lines with plasmids encoding HIV-1.

The image below summarizes the requirements for notification and permission for infectious agents and GMM.

Teaching activities that involve the use of GMM need to be reported as a separate GMM activity.

LiU's biosafety coordinator provides information and advice regarding notification and permission and will also submit the notification or permit application to the Swedish Work Environment Authority (see contact details to the right). The notification/application and associated documents should be registered in the registry of the respective institution.

Risk assessment and medical check-ups

Risk assessment

All work involving biological agents, including infectious agents, must be risk assessed. Risk assessment also needs to be carried out for other tasks that may involve risk of infection, such as handling blood, other bodily fluids, or tissue samples.

The risk assessment is conducted systematically to identify the risks associated with the work, and the identified risks are evaluated based on the likelihood of accidents or health hazards and the potential severity of the consequences.

Infectious agents/biological agents

To assist in the risk assessment of infectious agents/biological agents, a form developed by LiU is available. Information on risk assessment can also be found in the provisions Infectious Risks (Smittrisker) AFS 2018:4 as well as from the Public Health Agency of Sweden.

GMM (Genetically Modified Microorganisms)

Risk assessment for GMM in F- and L-activities is conducted using forms provided by the Swedish Work Environment Authority in conjunction with the notification process (link to forms here). For R-activities, the risk assessment form for infectious agents should be used (a specific module for GMM is employed).

Medical check-ups

If there is risk that the worker has been or can be exposed to harmful exposure of infectious or other biological agents the employer has to offer vaccination, when this is applicable, and other medical preventive measures.

More information about medical check-ups is available in the section Safe laboratory environment.

Infectious and GMM waste

Waste management is described on the pages Laboratory Waste.

For any uncertainties or questions regarding the handling of infectious/GMM-containing waste, please contact Biosafety Coordinator.

Emergecies and accidents

When working with infectious agents and GMM (Genetically Modified Microorganisms), it is necessary to have a plan in place for unexpected events. This can include spills, ventilation failures, and personal injuries such as needlestick, cutting, or splash injuries. A description of planned actions should be included in written handling and safety instructions for infectious agents and GMM.

Spill procedure

When working with infectious agents and GMM, a local procedure for spill management needs to be developed and documented in written handling and safety instructions.

Needlestick, Cutting, and Splash Injuries with the Risk of Infection

In the event of a needlestick, cutting, or splash injury involving contact with human blood, tissue, or infectious agents, it is important to cleanse the area and seek medical attention. The procedures are described in the Routine for Needlestick, Cutting, and Splash Injuries - Risk of Bloodborne or other Infections. It is advisable to refer to this routine in the risk assessment and have it readily available in the laboratory. The routine also includes a shorter instruction that can serve as a notice in the laboratory.

Serious incident involving risk of infection

In certain instances, incidents involving the risk of infection should be promptly reported to the Swedish Work Environment Authority. This applies to incidents involving the risk of infection for diseases of public concern. Examples of such diseases are:

  • Campylobacter
  • Hepatitis A-E
  • Tuberculosis
  • HIV
  • Methicillin-resistant Staphylococcus aureus (MRSA)

A comprehensive list is available from the Swedish Public Health Agency

The employer must immediately report serious incidents to the Swedish Work Environment Authority. This means that the head of the department or equivalent and the HR partner should be involved in the reporting. For more information on how this is done, refer to the general section on emergiences and accidents. Further information on serious incidents involving risk of infection can be found at the Swedish Work Environment Authority.

Emergency Preparedness Plan

When working with infectious agents in risk class 3, where a release could pose a serious danger to humans, and with GMM that could pose a serious danger to the environment or people in the vicinity, a written emergency preparedness plan needs to be developed (AFS 2018 19 §, AFS 2011:2 12§). If it involves GMM, authorities that may be affected in the event of an accident should be informed about the content of the emergency preparedness plan. The procedures should be practiced annually or more frequently if necessary.

Biosecurity

Biosecurity refers to measures taken to prevent intentional spread of infectious agents and toxins that could harm humans or the environment. This is different from the concept of biosafety, which involves work to prevent unintentional exposure or spread of infectious agents.

Biosecurity procedures aim to restrict unauthorized access, theft, or misuse of infectious agents and toxins. Biosecurity also includes protecting sensitive information about infectious agents and toxins. In activities involving the use or storage of infectious agents and toxins, it is important to incorporate biosecurity aspects. Key elements of biosecurity include responsibility, barriers, limited access, information protection, inventory management, and transport security.

Biosecurity is part of a regulated area known as export control, where legislation exists to promote non-proliferation and export control of strategically sensitive products. For more information on export control, visit Liunet. If you have any questions regarding biosecurity or export control related to biological substances, contact the biosafety coordinator. You can also find more information about biosecurity from the Public Health Agency of Sweden (Folkhälsomyndigheten).

Notification of infectious agents

The picture summarizes requirements for notification and permits for infectious substances and GMM

Handling of blood, other body fluids and tissue samples

Handling of blood, other body fluids and tissue samples

Human samples such as blood, other body fluids and tissues, may contain infectious agents and therefore constitute an infection risk during handling. The material may be tested for certain agents but there may still be other infectious agents that were not tested for, which is why protective measures needs to be used to minimise the risk for coworkers and others to be infected.

The basic rule is therefore to treat all human body fluids and tissues as infectious.

In all work with infectious agents and material that may imply risk of infection the provisions "Smittrisker" from the Swedish Work Environment Authority are to be followed.

Definition of human body fluids and tissues in this routine

All products from blood and other human body fluids, and all types of human tissue samples, that has not been treated in a way that make them safe. This also includes primary cultures from humans and also monkey.

The described routines are based on the provisions "Smittrisker" from the Swedish Work Environment Authority and regulations from other authorities.

Note! These guidelines are not sufficient when infectious agents are concentrated from blood, in that case special regulations must be followed including notification of infectious agents to the Swedish Work Environment Authority.

Infection risks

Blood, body fluids and human tissues can carry bloodstream infections without it being known. The most common infectious agents are hepatitis B and C virus, and HIV, but other viruses can also be present.

The infection risk is the greatest if pricking or cutting yourself on a sharp item that has been in contact with blood (inoculation). Injured skin and mucous membranes are also possible routes of infection.

Hepatitis B

The risk of getting infected if hepatitis B-infected blood ends up in the blood stream is approximately 5-30 % if the blood is Hepatitis B-positive, the incubation time is 2-6 months. Vaccination for Hepatitis B gives full protection in over 95 % of the vaccinated. If exposed when not fully vaccinated prophylactic treatment should be given. See routine for needlestick-, cut, and splash injury regarding contacting the infection clinic.

Hepatitis C

The risk of getting infected if Hepatitis C-infected blood ends up in the blood stream is approximately 3 %, the incubation time is 2-6 months. The infection can self heal but most people get a chronic infection that can result in liver injuries, the disease can most often be treated. There is no vaccine for Hepatitis C. If exposure is suspected, see routine for needlestick-, cut, and splash injury regarding contacting the infection clinic.

Human immunodeficiency virus (HIV)

The risk of getting infected if HIV-infected blood ends up in the blood stream is approximately 0,3 %, the incubation time is 1-6 weeks. Infection means a life-long chronic infection that untreated develops into AIDS. If exposed see routine for needlestick-, cut, and splash injury for rapid contact with the infection clinic.

SARS-CoV-2 (the virus that causes Covid-19)

For SARS-CoV-2 there are not yet secure data about the risk of getting infected if the virus ends up in the blood stream. The virus causes Covid-19 which is a very contagious disease. For most people the disease is mild but it can give severe disease and death in some individuals, particularly people that are not vaccinated. Elderly people have a higher risk of becoming severely ill compared to younger. Covid-19 can in certain cases give long-term effects.

Most people with Covid-19 get a respiratory infection but symptoms and degree of symptoms vary. The infection time is 2-14 days, the omicron and later variants have in most cases an incubation time of maximum three days.

Risk assessment and Biosafety Level

Risk assessment must always be carried out for the material in question and the planned handling, and forms the basis for how the work is carried out. If patient sampling is carried out this must also be risk assessed.

There is a LiU risk assessment form for infectious/biological agents. Before all sampling and handling of body fluids and tissues it is important to find out as much as possible about the individual/patient/material. All human material should nevertheless be handled as potentially infectious.

According to the provisions “Smittrisker” at least Biosafety Level 2 is to be applied for handling material that contains or may contain infectious agents. This includes all sampling and handling of samples from individuals in whom the infection status is unknown. Further protective measures must be applied if the risk assessment indicates that they are needed.

Material from the upper and lower respiratory tracts are particularly hazardous with respect to Covid-19, but all human material should be handled with care since it may contain virus.

Vaccination

Coworkers that may encounter body fluids or other human tissues are to be offered vaccination for Hepatitis B by the employer. If there is need for other vaccinations these should also be offered. Contact your HR partner for help with ordering vaccination.

Coworkers are to be offered vaccination for Covid-19 if there is a risk for exposure to SARS-CoV-2 in relation to work duties.

Handling and protective measures

Who are allowed to work with body fluids and human tissues?

Those who work with body fluids and human tissues are to get training about infection risks and how they need to work in a safe way to avoid infection.

The training should include:

  • Infection risks and routes of infection
  • Demonstration of the local handling and safety instructions
  • Information on how to:
    • Avoid infection risks
    • Get access to the offer of vaccination
    • Protect oneself against needlestick, cut and splash injuries
    • Follow hygiene measures for body fluids
    • Act in case of unexpected events such as needlestick, cut and splash injuries and spills
    • Report incidents and work injuries

Facility requirements

The premises must fulfil at least biosafety level 2 and be labelled with a sign that states biosafety level and symbol for biological hazard, according to the provisions “Smittrisker”and “Arbetsplatsens utformning”. Equipment for handwashing and hand disinfection must be available.

Handling in general

The work must be carried out applying special hygiene measures for body fluids and in a way that risk for splashes, aerosol formation and spill is minimised. Activities that can generate aerosols are pipetting, mixing, shaking, sonication and centrifuging. Use of sharp items should be avoided if possible. Disinfection of material and surfaces is done after finished work.

Protective measures when handling body fluids and human tissues

  • Biosafety Level 2 or higher must be applied as described in the provisions Smittrisker (in Swedish)
  • For work operations that involve risk of splashes or aerosol formation a splash guard or visor should be used
    • If there is risk for airborne infection handling are to be carried out in a biological safety cabinet (BSC) of class II
    • During the ongoing Covid-19 pandemic: Material containing respiratory tract secretions (may contain large amounts of virus) should always be handled in a biological safety cabinet (BSC) class II.
  • Personal protective equipment:
    • Long-sleeved protective clothing, or long-sleeved disposable plastic apron.
    • Protective gloves, approved for handling virus-related samples, if there is a risk of contact with body fluids.Protective gloves that fulfil EN 374-5:2016, the box should be labelled with pictogram for microorganisms and the text VIRUS underneath the pictogram.
    • Further protective equipment, for example visor/protective goggles, if the risk assessment has shown that this is required.
  • Sharp items (needles, sharp items in glass, razor blades):
    • Should be avoided as far as possible
    • Must have an integrated safety function if such products are available on the market, alternatively blunt alternative products may be available.
    • Needles should never be recapped after use.
  • Hand wash and hand disinfection:
    • Wash hands with soap and water, disinfect hands after finishing work.
    • Special hygiene measures for handling body fluids should be applied.

Note! Further protective measures and a higher biosafety level may be needed if the risk assessment shows that is needed (for example if there is a suspicion that infectious agents in risk class 3 can be present in the material).

Sampling close to patient

The risk assessment determines what protective measures are needed in order to carry out the sampling in a safe way, to avoid splashes and transmission through direct contact. If needles or other sharp items are used, the sampling is to be carried out using safe products (products with an integrated safety function) and needles are not to be recapped after use.

Desinfection

Disinfectant of choice must be effective against enveloped viruses. Surfaces that are clean can be disinfected with 70 % ethanol. Other surfaces should be disinfected with a tenside-containing agent, for example surface disinfection (45 % isopropanol) or virkon. More information about surface disinfection and disinfectants can be found in “Vårdhandboken” and at the Public Health Agency of Sweden.

Accidents

Needlestick, cut or splash injury: follow the LiU routine for needlestick, cut or splash injury if risk for infection. The infection clinic should be contacted immediately after an injury that involves contact with body fluids or human tissues. The incident should also be reported as an incident or work injury, see the routine for more information.

Spills: Use the spill routine that has been set up for the work. Use an effective disinfectant for enveloped viruses.

Inactivated material

If the material is inactivated with a validated method further analysis can be carried out at a lower biosafety level than Biosafety Level 2. However, if there is uncertainty regarding whether the inactivation is complete the material needs to continuously be handled at Biosafety Level 2.

Handling of waste

Waste that contains, or has been in contact with, blood or other human material (for example urine, tissue samples) is to be handled as infectious waste. The waste is to be placed into dedicated containers labelled with “UN 3291”.

Sharp items that have been in contact with human body fluids are to be discarded in secure waste disposal containers approved for sharp waste, labelled with “skärande och stickande avfall” (pricking and cutting waste) och UN 3291.

Contaminated laboratory coats are to be decontaminated, for example through autoclaving or according to local routine.

For more information, visit the page Laboratory waste.

Transport of samples

Human samples with minimal probability to contain infectious agents can be sent as “undantaget medicinskt prov” (in English “exempt medical sample”).

Samples or material with suspected or known content of infectious agents are to be transported as “Biologiskt ämne kategori B (UN 3373)” unless it does not involve infectious agents belonging to “Biologiskt ämne kategori A (UN 2814).

Read more in “Packa provet rätt” and the page about Dangerous goods.

Samples that contain or are suspected to contain SARS-CoV-2 are classified and transported as ”Biologiskt ämne kategori B (UN 3373)”. Cultured material such as strains and isolates are classified and transported as “Biologiskt ämne kategori A (UN 2814).

Freezing of samples

Samples containing body fluids or other human material are to be labelled with sufficient information regarding content and date for collection of samples. Date and content is important information for coworkers that later on are to be handling the samples, or if there is an unexpected event such as a freezer failure. The freezer needs to be labelled with a symbol for biological hazard.

Written handling and safety instructions

When handling body fluids and other human tissues written instructions needs to be available for the work. They should include:

  • Who are allowed to work with body fluids and human tissues (including requirements on training and information)
  • How coworkers get access to the offer of vaccination
  • Methods
  • Use of Equipment
  • Instructions on how to use personal protective equipment and technical aids (e.g. sharp items with integrated safety function) to avoid needlestick, cut and splash injuries.
  • Routines for disinfection and cleaning
  • Measures in case of unexpected events (e.g. needlestick, cut or splash injury; spills)
  • Waste handling and laundry routines

Handling samples with suspected or known Covid-19 infection

For samples with suspected or known Covid-19 infection the following protective measures should be applied.

Handling that does not involve culture or concentration of SARS-CoV-2 virus

  • Biosafety Level 2 or higher must be applied. Protective measures required for biosafety level 2 are listed in the provisions ”Smittrisker”.
  • All handling should be carried out in biological safety cabinet (BSC) of class II
    • Exception: if the handling according to the risk assessment involves low risk of exposure and low risk of aerosol formation, other measures to reduce aerosols and splashes can be used (splash guards, filter tips for pipettes, etc). Activities that generate aerosols include pipetting, mixing, shaking, sonication and centrifuging.
  • Personal protective equipment::
    • Long-sleeved protective clothing, or long-sleeved disposable plastic apron
    • Protective gloves, approved for handling virus-related samples. Protective gloves that fulfil EN 374-5:2016, the box should be labelled with pictogram for microorganisms and the text VIRUS underneath the pictogram.
    • The risk assessment shows if further protective equipment is needed, such as visor or face mask.
  • Special hygiene measures for handling body fluids should be applied. These are described in the provisions ”Smittrisker”.
  • Further protective measures may be needed if the risk assessment indicates this.

Culture of SARS-CoV-2 and the handling of cultured material

Culture or other intentional work with SARS-CoV-2 must be notified to the Swedish Work Environment Authority. Protective measures corresponding to Biosafety Level 3 must be applied, and the work is to be carried out in a Biosafety level 3 laboratory. The same applies to all other intentional work with SARS-CoV2.

Cultured material such as strains and isolates are classified and transported as “Biologiskt ämne kategori A (UN 2814).

Waste must be handled and inactivated locally, routines are determined in relations to notification of infectious agents to the Swedish Work Environment Authority.