What Happens 6 Months after Taking Pfizer/BioNTech Covid-19 Vaccine
Reuters/ The effectiveness of the Pfizer/BioNTech vaccine in preventing infection by the coronavirus dropped to 47% from 88% six months…
Why Covid-19 Shots Don’t Last
WSJ/ Why don’t Covid-19 vaccinations last longer?Measles shots are good for life, chickenpox immunizations protect for 10 to 20 years,…