Final answer:
The question is asking for various statistics related to COVID-19 in pregnancy, including the percentages of asymptomatic cases, hospital admissions, ICU requirements, non-vaccinated admissions, reduced risk with vaccination, and specific variants' ICU requirements. However, the specific figures for these percentages are not provided in the given information.
Step-by-step explanation:
The question is asking for various statistics related to COVID-19 in pregnancy.
a) The percentage of asymptomatic cases in pregnant women is variable and can range from 30-80%.
b) The percentage of pregnant women admitted to the hospital for COVID-19 is estimated to be around 3-15%.
c) The percentage of pregnant women admitted to the hospital for COVID-19 who require intensive care unit (ICU) treatment is estimated to be around 1-5%.
d) The percentage of pregnant women admitted to the hospital for COVID-19 who have not been vaccinated since 2021 is dependent on the vaccination rate in the population, but it can be assumed that a significant proportion may not have received the vaccine.
e) The likelihood of hospital admission can be reduced with vaccination. The specific percentages for 3 doses or 2 doses with a booster vaccination are not provided, but vaccinated individuals generally have a lower risk of severe illness and hospitalization compared to unvaccinated individuals.
f) The percentage of Delta variant cases among COVID-19 cases requiring ICU treatment in pregnant women is not specified.
g) The percentage of Alpha variant cases among COVID-19 cases requiring ICU treatment in pregnant women is not specified.
h) The ratio for preterm birth rate among pregnant women with COVID-19 is not provided.