Britain is expected to allow the mixing of several coronavirus vaccines in special circumstances, despite limited knowledge of whether or not mixed doses provide the same protection as uniform doses.
The British government issued updated guidelines on New Year’s Eve stating that: (() if the same vaccine is not available or if the first product received is unknown, it is reasonable to offer a dose of the product available locally to complete the Calendar. “
Mary Ramsay, head of immunizations at Public Health England, explained that different doses of the coronavirus vaccine would only be given on extremely rare occasions, Reuters reported.
“Every effort should be made to give them the same vaccine, but when that is not possible, it is better to give a second dose of another vaccine than not to give it,” he said.
Britain became the first to provide emergency authorization for both Pfizer-BioNTech and AstraZeneca vaccines in December. The two vaccines require two doses several weeks apart, but were not created to be combined together, Reuters reported.
According to guidelines published by Britain, there is still no “evidence on the interchangeability of COVID-19 vaccines, although studies are being conducted.”
The British government also became concerned earlier this month when it announced that it would delay the administration of the second dose of coronavirus vaccine for 12 weeks to those who received the first shot to provide the initial shot, which provides limited protection against the virus, plus people, according to Reuters.
The best expert in infectious diseases, Anthony Fauci
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“I wouldn’t be in favor of that,” he told CNN. “We will continue to do what we are doing.”