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Artículos sobre Pfizer-BioNTech vaccine

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Millions of people, particularly older ones who have been isolated from children and grandchildren, can fly domestically at low risk now, the CDC says. Hispanolistic/Getty Images

You can fly! CDC says fully vaccinated people can travel safely within the US

New CDC guidance permits domestic travel for fully vaccinated individuals, as long as social distancing is respected. International travel guidelines are different.
A sign shows the way to a recovery area to monitor any immediate side effects from the COVID-19 vaccine on Dec. 17, 2020, in Reno, Nevada. Patrick T. Fallon /AFP via Getty Images

What COVID-19 vaccine side effects might I expect?

Many people never experience the least bit of discomfort from the COVID-19 vaccines, but mild side effects are common. They include swelling in the affected arm, nausea and chills.
UPS employees roll out first doses of the Pfizer vaccine at the UPS hub in Louisville, Ky., on Dec. 13, 2020. Michael Clevenger/Getty Images

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

The vaccine rollout is underway, but what happens if there is a supply disruption? Would it be feasible to change strategy and give more people a first dose? An expert analyzes the data.
A COVID-19 vaccine is administered at a clinic at Olympic Stadium in Montréal on March 1, 2021, marking the beginning of mass vaccination in the Province of Québec based on age. THE CANADIAN PRESS/Paul Chiasson

COVID-19 vaccine FAQs: Efficacy, immunity to illness vs. infection (yes, they’re different), new variants and the likelihood of eradication

With four COVID-19 vaccines approved for use in Canada, it's time to answer FAQs about efficacy, immunity, eradication and variants.
Nurse Nicole Chang celebrates after receiving one of the first injections of the COVID-19 vaccine Dec. 16 at Ronald Reagan UCLA Medical Center in Westwood, California. Brian van der Brug/Getty Images

Vaccinated and ready to party? Not so fast, says the CDC, but you can gather with other vaccinated people

Millions of vaccinated people have been waiting for guidelines on what they can do safely. The CDC says it's OK to gather with other vaccinated people, but it's still best to avoid travel.
Vaccinated people are wondering whether they can ease social distancing and mask-wearing. AP Photo/Darko Bandic

Can vaccinated people still spread the coronavirus?

You've been vaccinated; can you now safely see your friends and family? New research hints that vaccinated people may be less likely to transmit the coronavirus, but they are not 100% in the clear.

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