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.
HIV, the virus that causes AIDS, can be transmitted from an infected mother to her newborn child. According to the World Health Organization, without antiretroviral treatment, up to 30% of babies of HIV infected mothers get HIV. If the mother breastfeeds, the overall risk rises to between 35% and 50%.