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The CDC has updated its COVID-19 quarantine guidelines, reducing the recommended quarantine period from 14 days to 10 days if no symptoms are present, or 7 days with a negative test. New York is set to receive COVID-19 vaccines by December 15th, pending safety approvals, with Pfizer providing enough doses for 170,000 residents. Additionally, the US Department of Transportation has redefined service animals on airplanes, now only recognizing dogs as service animals, which may lead to airlines banning other emotional support animals.

What percentage of effectiveness did Pfizer claim for its vaccine candidate?

How has the definition of a service animal changed according to the Department of Transportation?