Newly Discovered Bat Coronavirus Sparks Interest and Caution

A newly discovered bat coronavirus, using the same cell-surface protein as SARS-CoV-2, could potentially spread to humans. However, it exhibits less affinity to human cells, indicating a lower risk of human adaptation. Recent findings also influenced COVID vaccine makers' shares, but experts warn against overreacting to pandemic concerns.

Chinese researchers have identified a bat coronavirus using the same cell-surface protein to infiltrate human cells as the virus responsible for COVID-19. While this raises concerns about potential human transmission, scientists emphasize that its ability to enter human cells is notably less efficient than SARS-CoV-2.

The virus, dubbed HKU5-CoV-2, features a furin cleavage site for cell entry via the ACE2 receptor protein. Despite this, its binding affinity is substantially lower than SARS-CoV-2, diminishing its pandemic potential. Laboratory experiments targeted the virus with monoclonal antibodies and antiviral drugs.

This discovery affected stock prices of prominent COVID vaccine manufacturers, with shares seeing significant movement. Yet, experts, including Dr. Michael Osterholm, caution against overestimating the pandemic threat posed by this virus, given current population immunity and its suboptimal adaptation to humans.