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Adding key ingredient to vaccine may stimulate broad protection against viruses

Adding key ingredient to vaccine may stimulate broad protection against viruses
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Audio: Giving 2 Doses Of Different COVID-19 Vaccines Could Boost Immune Response

But in the future, that could change, either by necessity or by design.
This idea of using two types of vaccines isn t a new concept. It s known as heterologous vaccination, although there s a more colloquial term.
In the U.K. at the moment, we re sort of calling it mix and match, says Helen Fletcher, a professor of immunology at the London School of Hygiene & Tropical Medicine. She says shortages of a vaccine or concerns about side effects may induce health officials to adopt a mix-and-match strategy.
Health agencies in France and Germany are already encouraging people who ve gotten the AstraZeneca vaccine to consider getting one of the mRNA vaccines for their second shot. ....

Andrew Allen , Violettal Horton , Helen Fletcher , Bali Pulendran , London School Of Hygiene Tropical Medicine , Stanford University , London School , ஆண்ட்ரூ ஆலன் , ஹெலன் பிளெட்சர் , லண்டன் பள்ளி ஆஃப் சுகாதாரம் வெப்பமண்டல மருந்து , ஸ்டான்போர்ட் பல்கலைக்கழகம் , லண்டன் பள்ளி ,