Delays in the administration of a second vaccine does not impact safety, health officials add. Others suggest that we ought not to take the chance. What facts are there?
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Why did health authorities conclude that the second dose of the Covid 19 vaccine should be delayed? “vaccinating a larger number of people with a single dose prevents more deaths and hospitalizations than vaccinating a smaller number with two doses.”vaccinating a larger number of individuals with a single dose prevents more deaths and hospitalizations than vaccinating a smaller number with two doses.
Protection should not be compromised by delays in administering a second vaccine dose of up to 12 weeks, it argues.
According to the JCVI, the short-term effectiveness of the first dose of the Pfizer-BioNTech vaccine is around 90%, while that of the AstraZeneca vaccine is 70%. Why were some doctors and scientists disturbed by the decision to postpone the second dose? Administrative uncertainty and distressed elderly patients were created by the cancellation of the second dose.
In addition, some scientists suggest that how the vaccine would function with more time between injections is not understood. Nor is it understood over a longer time how protective a single injection is. Why, they say, take a risk? Is this view held by most scientists? Oh, no.
The risks of limiting viral defense are minimal, many say. It is safer to vaccinate more people, probably with less effectiveness, than to send a second dose to less people with a new covid version spreading rapidly. What was the reaction in the U.S.? Dr. Anthony Fauci, the leading infectious disease expert, said that while “make the argument” for delaying doses is possible, he is not in favor of it. Commentators have, however, pointed out that, relative to the UK, the U.S. is very litigious, so physicians appear to be more cautious in modifying vaccination practices. This week, the Oxford Covid vaccine will be administered.
The Chief Medical Officer for England, Chris Whitty, and his colleagues in Wales, Scotland and Northern Ireland have said they support the decision to postpone the second dose to ensure that more individuals receive their first vaccine as soon as possible. There are more than 700 vaccination sites available for vaccination in the next few weeks, according to the NHS. This week, up to 100 hospitals will be online across the country, while vaccinations will also begin with another 180 GP practices.