Thread: Two Strains?
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Old 03-22-2020, 09:00 AM
Stranger On A Train is online now
Join Date: May 2003
Location: Manor Farm
Posts: 19,832
Even if there are two distinct strains of the SARS-CoV-2 virus, it is not guaranteed that exposure to and the development of antibodies against one strain will convey immunity against the other any more than exposure to one strain of influenza will immunize you against all others. Nor is it guaranteed that exposure or vaccination will provide indefinite immunity.

Vaccine development is complex and coronaviruses in particular are sufficiently mutable that a universal vaccine may be elusive. This is why it is important to focus on both treatments to retard development of the COVID-19 disease and more reliable testing to detect and intervene patients early in infection, as well as non-pharmaceutical measures (social distancing, better sanitation, public health surveillance) to combat outbreaks.