Infection with a pre-Omicron SARS-CoV-2 variant protects against reinfection for almost three years

More evidence that SARS-Cov-2/Covid-19 is a fairly harmless disease (known since latest about mid 2020). It seriously affects probably only less than 5-10% of the population and spares young people and which the human natural immune system can handle very well!

 

"Natural immunity induced by infection with SARS-CoV-2 provides a strong shield against reinfection by a pre-Omicron variant for 16 months or longer, according to a study1. This protection against catching the virus dwindles over time, but immunity triggered by previous infection also thwarts the development of severe COVID-19 symptoms — and this safeguard shows no signs of waning. ..."

One coronavirus infection wards off another — but only if it’s a similar variant Infection with a pre-Omicron SARS-CoV-2 variant protects against reinfection with a second, although the effect fades almost completely after three years.