Prognosis
Brazil to Begin Giving Vaccine Boosters, Cut Time Between Doses
- Changes will begin next month, according to health ministry
- Longer gap between shots has slowed down full immunization
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Brazil will begin distributing booster shots of Covid-19 vaccines to some groups starting in mid-September, joining countries from the U.S. to Chile planning to use the jabs to contain the virus.
The booster will preferably be from Pfizer Inc., the health ministry said in a series of tweets Wednesday. The effort will focus on people over 70 vaccinated more than six months ago, as well as those who have immunodeficiencies. Johnson & Johnson and AstraZeneca Plc vaccines could be used as alternatives, the ministry said. Authorities made no mention of Sinovac Biotech’s CoronaVac, which has been used frequently in Brazil but has lower efficacy rates.