Pfizer sees waning immunity from its COVID-19 vaccine
A fully vaccinated individual is considered to be someone 14 days after their second dose for a multi dose COVID vaccine or 14 days after the single dose for single dose one. While we know that many South Africans are…
As COVID-19 vaccines become more available across the United States, we are heading toward herd immunity. What is it, when will it happen and what can we expect? A Cleveland Clinic doctor explains. Video: David Caraccio More from The Sacramento…
What do we know about natural immunity to COVID? In this video I will talk about a number of studies looking at natural immunity to COVID looking at different variants. What type of immunity, vaccine versus natural is the best?…
A ‘mix-and-match’ approach to COVID-19 vaccinations is boosting protection against the virus. A UK study has been looking specifically at the efficacy the Pfizer and AstraZeneca jabs in different schedules and combinations. It found when a Pfizer shot was given…
A study in the UK has found that mixing different Covid-19 vaccines triggers a strong immune response. The Com-Cov study tested mixed doses of Covid vaccines on 850 volunteers aged 50 & above. It showed that all combinations- two doses…
