Biology is usually the first science high school students are taught because it has less of a focus on math than other science subjects, so freshman have time to develop their math skills before moving on to more math-focused sciences.
HIV can be transmitted from an HIV-positive woman to her child either during pregnancy, or during labour and delivery, or by breastfeeding.In Europe and the USA, about 15 to 20% of babies born to HIV-positive women who are not taking anti-HIV drugs are infected.IV can be transmitted from an HIV-positive woman to her child either during pregnancy, or during labour and delivery, or by breastfeeding.
On any given day. in the United States... 10,657 babies are born. 3,890,000/yr: US Census Bureau. 1 of these babies is HIV positive. 5/100,000: Center for Disease Control and Prevention. 2 of these babies are born with Spina Bifida. 20/100,000: Center for Disease Control and Prevention.