I am genuinely afraid for my child

New research is showing that people with type A blood are more susceptible to covid and type O are least susceptible, where susceptible means more likely to catch and more likely to die.

Older kiddo has type O blood
Niece has (we think, not sure) type O blood.
Sister B has type O blood.
Brother has type O blood.

I have type A blood.
Hubs has type A blood.
Sister J has type A blood.
Younger kiddo has type A blood, asthma, and a crappy immune system.

I am genuinely afraid for my child.