What do we know about the COVID-19 (coronavirus) vaccine?

Unchallenged

Several companies working on COVID-19 vaccines have declined to pledge not to make a profit from vaccine sales.

On 21 July 2020, US Rep. Jan Schakowsky asked vaccine manufacturers whether they would commit to selling their vaccines "at cost," (i.e. for no profit). Moderna and Merck declined her request, while Johnson & Johnson said it wouldn't make a profit during the pandemic.

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