Vaccines are only as effective as the conditions in which they are kept. That’s why paying a bit of extra attention to storage can go a long way when it comes to ensuring these immunizations do their job.
According to Curt Vlietstra, DVM at Boehringer Ingelheim, improper storage or handling can result in ineffective vaccines. Temperature fluctuations, exposure to light and improper handling can all impact a vaccine’s potency, reducing its protective power. Vlietstra advises farmers to pay close attention to vaccine storage conditions to help maintain effectiveness.
Top Vaccine Storage Pitfalls
Vaccines are sensitive biological substances that need specific conditions to maintain their potency. Three issues Vlietstra commonly sees when it comes to vaccine storage include:
- Improper Temperature: Most vaccines must be stored between 35°F and 46°F. Any exposure to freezing or excessive heat can denature the active ingredients, making them ineffective.
- Exposure to Light: Many vaccines are sensitive to light, which can also degrade their quality. These vaccines should be protected from UV light once removed from the refrigerator.
- Expired Vaccines: Use older vaccines first and always check expiration dates. Storing newer stock at the back and keeping older doses at the front makes it easier to avoid using expired vaccines and helps maintain the effectiveness of your supply.
Steps for Proper Vaccine Storage
Vlietstra suggests implementing the following steps to help ensure vaccines are stored properly.
Invest in Reliable Refrigeration: “Don’t go with the cheapest fridge you can find,” Vlietstra advises. Instead, he recommends investing in a quality refrigerator that is designated solely for medical usage.
“I don’t want your lunch or drinks in there because the more time it gets open and closed, the more changes you have in the temperature. Plus, there’s a higher likelihood that it doesn’t get closed all the way.
Use Temperature Monitors: Implement temperature monitoring systems that alert staff if the vaccine storage deviates from the optimal range.
“Usually, a fridge doesn’t go bad overnight,” Vlietstra says. It slowly starts to lose its effectiveness. Having a good thermometer can warn you when your barn fridge is on its way out. Some of these thermometers even have wireless alerts that can connect to an app on your phone.”
Handle With Care: When it comes to vaccine handling, keeping doses at a stable temperature is crucial, even after mixing. Whether it’s hot or cold outside, Vlietstra recommends storing mixed vaccines in a transportable cooler to help protect them from extreme temperature fluctuations and sunlight.
“How we mix, handle and store these vaccines matters,” Vlietstra adds. “Have conversations with your veterinarian and consider implementing a training day to review proper storage and handling SOPs with your team. Regularly refreshing this training ensures everyone is on the same page, which can make a real difference when it comes to herd health.”
