HIV/AIDS rate in Nigeria is much lower compared to the other African nations such as Botswana or South Africa whose prevalence (percentage) rates are in the double digits. , the HIV prevalence rate among adults ages 15–49 was 1.5 per cent. The life expectancy in Nigeria is 54.7 years on average, and 71% and 39% of the population have access to improved water sources and improved sanitation, respectively. , the infant mortality is 74.2 deaths per 1,000 live births.