COVID-19 uses stealth to infect the lungs

Vaccines remain an important part of the fight against COVID-19 but are unlikely to be the complete answer. The SARS-COV2 virus is able to infect lungs with 3 times more efficiency than SARS-COV (seen in non-human primates) while producing less immune activation.

This technique of stealth is an important part of the viral machinery as delayed immune acti…