– The US Food and Drug Administration said Monday that the idea of changing the permitted dose or schedule of COVID-19 vaccines is premature and is not supported by available data.
The FDA says it has been following discussions about rumors of further dose reductions, longer doses, halves or mixing of vaccines.
While these were “reasonable” issues to consider, the US regulator said it was “premature and unsubstantiated in the available evidence” to suggest any changes to the FDA-approved doses or schedule of these vaccines at this time.
“Without the appropriate data to support such changes in the vaccine administration, we run a serious risk of endangering public health,” the agency said in a statement.
Pfizer և partner BioNTech SE as well as Moderna Inc. recently won permission for their vaccine candidates to use the US emergency.
Existing data continue to support the use of two prescribed doses of each approved vaccine at regular intervals, the FDA said.
“The interval between the first and second doses of Pfizer-BioNTech COVID-19 is 21 days. “The range of first and second doses for Moderna COVID-19 vaccines is 28 days,” the FDA said Monday. https://bit.ly/38g9IsC:
Leaving the strategy of other countries, the British government said that last week people could rarely be given two COVID-19 shots, for example, if the same dose of vaccine was not available.