COVID-19 Vaccines: A Dose Of Caution From Merck

 
• By Michael McCaughan and Cole Werble

The global COVID-19 pandemic is prompting an unprecedented effort to develop a vaccine in record-breaking time. But there may be pitfalls in letting optimism run too far ahead of the realities of vaccine development.

Doctor, nurse, scientist hand in blue gloves holding flu, measles, coronavirus, covid-19 vaccine disease preparing for child, baby, adult, man and woman vaccination shot, medicine and drug concept.

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