Pfizer and Moderna each recently introduced the first COVID-19 vaccines – and both are over 90% effective. An unprecedented achievement. But they are not all roses. These vaccines should be stored in extreme cold. And that’s a huge logistical challenge. So what about those vaccines that require such a brutal cold? Subscribe to Cheddar on YouTube: Connect with Cheddar! On Facebook: On Twitter: On Instagram: On Cheddar.com :.
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