In the ever-changing world of healthcare, one topic we can never lose sight of is reliable vaccine storage. Even the most effective vaccine will fail if it isn’t stored properly. The “cold chain” describes the system used to maintain recommended temperatures from the time vaccines leave the manufacturer until they are administered.
Everyone who works in a clinical setting with vaccine administration should have a sense of the storage of vaccines along with resources that can help clinics maintain best practices. Test yourself to see if you know the answers and get resources on best practices.
1. Who oversees vaccine storage at your location?
Many clinics designate a primary and backup vaccine coordinator responsible for monitoring temperatures, maintaining logs, and ensuring staff are trained in storage procedures. Other locations ensure these roles are assigned throughout the entire workforce. Clear roles and responsibilities ensure that when someone is out, everyone knows which jobs to cover and how to cover them.
While vaccine storage may seem like a small operational detail, it plays a crucial role in vaccination programs. Clinicians share an expected level of protection with families, which will only be accurate if the vaccine is stored correctly. Many opportunities for preventable errors exist. Check out Immunize.org’s article on preventable errors to set your practice up for success.
2. What key responsibilities need to be designated?
Responsibilities of the vaccine handling process from transport to administration all need to be outlined.
Temperature monitoring: One of the most important aspects throughout the process is temperature monitoring. Most routinely used vaccines in the United States should be stored in a refrigerator reading between 2°C to 8°C (36°F to 46°F). However, some vaccines require frozen storage prior to use, including varicella-containing vaccines, such as varicella and MMRV. Because storage requirements vary by product, staff should always review manufacturer guidance when new vaccines are introduced. Immunize.org has developed a one-page quick reference guide that can be posted in clinical areas, so staff can easily confirm correct storage procedures.
Transport: Another important responsibility is overseeing transport procedures when vaccines must be moved between locations. Improper transport — such as inadequate insulation, prolonged transit times, or lack of temperature monitoring — can expose vaccines to temperatures outside the recommended range.
Supply management: Ordering of vaccines is also an important task. Not only is it important to order only quantities likely to be used, it’s also important to ensure appropriate space is available when an order arrives. If a large order arrives and there is insufficient storage space, vaccine can be wasted. If the person ordering is different from the person overseeing storage, coordination of efforts is crucial.
3. Where are vaccines stored?
Clinics should use purpose-built vaccine refrigerators or freezers. Household units are more likely to experience temperature fluctuations that could destabilize vaccines. The storage locations within the unit are also important for maintaining vaccine effectiveness. Vaccines should be stored in the center of the unit, rather than on doors or in drawers. In those locations, temperatures vary more widely.
Common storage pitfalls include:
- Overcrowded refrigerators, which restrict airflow and lead to uneven temperatures
- Storage in refrigerator doors, where temperatures fluctuate frequently
- Improper placement near cooling vents or walls, which may create colder zones
4. When (and how) is monitoring completed?
Continuous temperature monitoring is a cornerstone of proper vaccine storage. Clinics should use digital data loggers (DDLs) that record temperatures throughout the day. These devices allow staff to review minimum and maximum temperatures and quickly identify when temperatures move outside the accepted range, commonly referred to as a “temperature excursion.”
Best practices include:
- Checking and documenting temperatures at least twice daily
- Using alarms or alerts when temperatures fall outside the recommended range
- Maintaining temperature logs for documentation and quality assurance
One common pitfall is failure to monitor temperatures during power outages or equipment malfunctions. Developing a clear office protocol for responding to temperature excursions can help ensure that only viable vaccines are administered. Immunize.org provides a form that can be used to document any unacceptable vaccine storage event and another form to be used in emergency response to document the specific vaccines impacted. These can be printed out to be readily available and ensure the clinic has a consistent approach to managing storage events.
5. Why are these details so critical?
Vaccines are biologic products composed of proteins, weakened viruses, or other delicate components that can break down when exposed to temperatures outside of their recommended range. Heat exposure can lead to chemical degradation, while freezing can damage certain vaccines by changing their protein structure or affecting aluminum-containing adjuvants.
Importantly, loss of potency is usually not visible. Vaccines exposed to inappropriate temperatures typically look the same as those stored correctly. For this reason, breaks in the cold chain — even brief ones — can reduce vaccine effectiveness without obvious warning signs. While some vaccines used internationally may have temperature sensors, those most commonly stocked in U.S. clinics are reliant on routine monitoring of the cold chain.
Maintaining proper storage conditions ensures that every dose administered provides the protection patients expect.
Looking for more details? Immunize.org has a wealth of resources on storage & handling.
Contributed by: Lori Handy, MD, MSCE , Charlotte A. Moser, MS
In the ever-changing world of healthcare, one topic we can never lose sight of is reliable vaccine storage. Even the most effective vaccine will fail if it isn’t stored properly. The “cold chain” describes the system used to maintain recommended temperatures from the time vaccines leave the manufacturer until they are administered.
Everyone who works in a clinical setting with vaccine administration should have a sense of the storage of vaccines along with resources that can help clinics maintain best practices. Test yourself to see if you know the answers and get resources on best practices.
1. Who oversees vaccine storage at your location?
Many clinics designate a primary and backup vaccine coordinator responsible for monitoring temperatures, maintaining logs, and ensuring staff are trained in storage procedures. Other locations ensure these roles are assigned throughout the entire workforce. Clear roles and responsibilities ensure that when someone is out, everyone knows which jobs to cover and how to cover them.
While vaccine storage may seem like a small operational detail, it plays a crucial role in vaccination programs. Clinicians share an expected level of protection with families, which will only be accurate if the vaccine is stored correctly. Many opportunities for preventable errors exist. Check out Immunize.org’s article on preventable errors to set your practice up for success.
2. What key responsibilities need to be designated?
Responsibilities of the vaccine handling process from transport to administration all need to be outlined.
Temperature monitoring: One of the most important aspects throughout the process is temperature monitoring. Most routinely used vaccines in the United States should be stored in a refrigerator reading between 2°C to 8°C (36°F to 46°F). However, some vaccines require frozen storage prior to use, including varicella-containing vaccines, such as varicella and MMRV. Because storage requirements vary by product, staff should always review manufacturer guidance when new vaccines are introduced. Immunize.org has developed a one-page quick reference guide that can be posted in clinical areas, so staff can easily confirm correct storage procedures.
Transport: Another important responsibility is overseeing transport procedures when vaccines must be moved between locations. Improper transport — such as inadequate insulation, prolonged transit times, or lack of temperature monitoring — can expose vaccines to temperatures outside the recommended range.
Supply management: Ordering of vaccines is also an important task. Not only is it important to order only quantities likely to be used, it’s also important to ensure appropriate space is available when an order arrives. If a large order arrives and there is insufficient storage space, vaccine can be wasted. If the person ordering is different from the person overseeing storage, coordination of efforts is crucial.
3. Where are vaccines stored?
Clinics should use purpose-built vaccine refrigerators or freezers. Household units are more likely to experience temperature fluctuations that could destabilize vaccines. The storage locations within the unit are also important for maintaining vaccine effectiveness. Vaccines should be stored in the center of the unit, rather than on doors or in drawers. In those locations, temperatures vary more widely.
Common storage pitfalls include:
- Overcrowded refrigerators, which restrict airflow and lead to uneven temperatures
- Storage in refrigerator doors, where temperatures fluctuate frequently
- Improper placement near cooling vents or walls, which may create colder zones
4. When (and how) is monitoring completed?
Continuous temperature monitoring is a cornerstone of proper vaccine storage. Clinics should use digital data loggers (DDLs) that record temperatures throughout the day. These devices allow staff to review minimum and maximum temperatures and quickly identify when temperatures move outside the accepted range, commonly referred to as a “temperature excursion.”
Best practices include:
- Checking and documenting temperatures at least twice daily
- Using alarms or alerts when temperatures fall outside the recommended range
- Maintaining temperature logs for documentation and quality assurance
One common pitfall is failure to monitor temperatures during power outages or equipment malfunctions. Developing a clear office protocol for responding to temperature excursions can help ensure that only viable vaccines are administered. Immunize.org provides a form that can be used to document any unacceptable vaccine storage event and another form to be used in emergency response to document the specific vaccines impacted. These can be printed out to be readily available and ensure the clinic has a consistent approach to managing storage events.
5. Why are these details so critical?
Vaccines are biologic products composed of proteins, weakened viruses, or other delicate components that can break down when exposed to temperatures outside of their recommended range. Heat exposure can lead to chemical degradation, while freezing can damage certain vaccines by changing their protein structure or affecting aluminum-containing adjuvants.
Importantly, loss of potency is usually not visible. Vaccines exposed to inappropriate temperatures typically look the same as those stored correctly. For this reason, breaks in the cold chain — even brief ones — can reduce vaccine effectiveness without obvious warning signs. While some vaccines used internationally may have temperature sensors, those most commonly stocked in U.S. clinics are reliant on routine monitoring of the cold chain.
Maintaining proper storage conditions ensures that every dose administered provides the protection patients expect.
Looking for more details? Immunize.org has a wealth of resources on storage & handling.
Contributed by: Lori Handy, MD, MSCE , Charlotte A. Moser, MS