Doses of the Pfizer-BioNTec vaccine, in Dijon, December 27, 2020 (illustration) -
PHILIPPE DESMAZES-POOL / SIPA
It was on Christmas Eve that the first symptoms appeared.
A 45-year-old nurse working in a Covid-19 unit of a hospital in San Diego (United States) tested positive for the coronavirus on Saturday, December 26.
However, the practitioner had received a dose of the vaccine developed by the Pfizer laboratory eight days earlier, reports the American channel
ABC News San Diego
.
The nurse was one of the priority people since the launch of the vaccination campaign in the United States.
It was only a little over a week after the injection that he experienced symptoms characteristic of the coronavirus: chills, muscle aches and severe fatigue.
He had not yet received the second dose of the vaccine
Should we be concerned about the effectiveness of vaccines after the announcement of this contamination?
No, replied the specialist in infectious diseases Christian Ramers, interviewed by the American channel.
According to him, it is possible that the nurse was infected before receiving his first dose of the vaccine since the incubation period can last up to two weeks.
In addition, the practitioner had only received a first injection of Pfizer's vaccine.
"We believe that this first dose gives you about 50% protection and that you need a second dose to reach 95%", specifies the American specialist.
“We know from clinical trials on vaccines that it takes about 10 to 14 days to start developing protection,” he adds.
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Health
United States
Vaccination
Vaccine
Coronavirus
Covid 19