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Articles on COVID-19

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Make that second appointment and get your final dose for full protection. MediaNews Group/Reading Eagle via Getty Images

How effective is the first shot of the Pfizer or Moderna vaccine?

An immunologist explains that you get some protection from the first dose of the mRNA vaccines but you need two to build up strong immunity, particularly to newer coronavirus variants.
Monterey Mushrooms, an agricultural employer in California, teamed up with its union and the local county to get its workers vaccinated. AP Photo/Jeff Chiu

3 ways employers could help fight vaccine skepticism

Surveys suggest people trust companies more than government and the media, showing they have an important role in helping end the pandemic.
Holiday gatherings with family and friends before the pandemic seemed so simple. FatCamera via Getty Images

4 steps to reaching Biden’s goal of a July 4th with much greater freedom from COVID-19

The president wants Americans to be able to celebrate Independence Day with small gatherings. What will it take to get the virus under control by then? Three public health school deans explain.

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