COVID-19 may have different effects at different stages of pregnancy. This is because pregnancy is associated with wide-ranging hemodynamic and immunological changes, among others. The latter may predispose the pregnant woman to greater severity of disease following viral infection.
Pregnancy has not been associated with a higher risk of mortality, though disease severity may be higher in the latter half of pregnancy. The risk of hospitalization and admission to intensive care is also increased in pregnancy complicated by COVID-19.