со слешдоту:
Millions of Americans are not getting the second doses of their Covid-19 vaccines, and their ranks are growing.
A number of vaccine providers have canceled second-dose appointments because they ran out of supply or didn't have the right brand in stock. Walgreens, one of the biggest vaccine providers, sent some people who got a first shot of the Pfizer or Moderna vaccine to get their second doses at pharmacies that only had the other vaccine on hand. Several Walgreens customers said in interviews that they scrambled, in some cases with help from pharmacy staff, to find somewhere to get the correct second dose. Others, presumably, simply gave up. From the outset, public health experts worried that it would be difficult to get everyone to return for a second shot three or four weeks after the first dose. It is no surprise that, as vaccines are rolled out more broadly, the numbers of those skipping their second dose have gone up.
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