NEET BIOLOGY

Detailed explanation-1: -Infant mortality is conventionally measured as the number of deaths in the first year of life per 1, 000 live births during the same year. Roughly speaking, by this measure worldwide infant mortality approximates 80 per 1, 000; that is, about 8 percent of newborn babies die within the first year of life.

Detailed explanation-2: -The definition of infant mortality rate is simply the number of infant deaths in a single year out of every 1, 000 live births that year. In the United States, there are approximately 25, 000 infants that die every year before celebrating their first birthday.

Detailed explanation-3: -Infant mortality is the death of an infant before his or her first birthday. The infant mortality rate is the number of infant deaths for every 1, 000 live births.

Detailed explanation-4: -Infant mortality rate is strictly speaking not a rate (i.e. the number of deaths divided by the number of population at risk during a certain period of time) but a probability of death derived from a life table and expressed as rate per 1000 live births.

Detailed explanation-5: -The neonatal period is the most vulnerable time for a child Children face the highest risk of dying in their first month of life at an average global rate of 18 deaths per 1, 000 live births in 2021, down by 51 per cent from 37 deaths per 1, 000 live births in 1990.