Meta - analysis showed no significant increase 6 in the risk of COVID - 19 infection ( OR : 0 . 95 , 95 % CI : 0 . 89 - 1 . 05 ) in patients receiving 7 ACEI / ARB therapy , and ACEI / ARB therapy was associated with a decreased risk of severe 8 COVID - 19 ( OR : 0 . 75 , 95 %