People can develop temporary natural immunity after recovering from COVID-19. However, vaccines are the best way to train the immune system to recognize viruses. When a vaccinated person encounters ...

Natural immunity will not protect you against COVID-19 as well as an mRNA vaccine, according to both experts and the research. Multiple anti-vaccine groups touted natural immunity as a viable ...

Spring can see frequent COVID cases, since the effectiveness of fall vaccines can start to wane, and people tend to travel more as soon as the warm weather returns, which can increase exposure to ...

In a new study, University of Georgia researchers have found that natural immunity from previous flu infections has a significant impact on how well future influenza vaccinations work. That may mean ...

Public-health officials in the U.S., unlike their counterparts elsewhere, have steadfastly focused on Covid-19 vaccines in fighting the pandemic, acting as if natural immunity following Covid-19 ...

Cases of people testing positive for COVID-19 after having had the virus previously, including among some folks who also got vaccinated, have raised questions about how much immunity people get from ...

Natural immunity due to COVID-19 infection provides strong protection against reinfection and serious illness for several months after initial infection, but immunity wanes over time, a new study has ...

Largest review and meta-analysis assessing the extent of protection following COVID-19 infection by variant and how durable that protection is against different variants, including 65 studies from 19 ...

COVID-19 antibodies can stay in the body for several months up to over a year. A combination of natural and vaccine-based immunity likely provides more protection. Antibodies are proteins that ...

People living in regions where malaria outbreaks are common experience repeated exposure to the disease, which gradually teaches the body how to fight back. Over time, they develop naturally acquired ...