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.
You can have HIV and not have any symptoms, and some HIV tests will not show a positive result for as long as 3 months after infection. This is referred to as the HIV test window period, and has to do with how HIV tests detect the virus.Some people recently infected with HIV will experience some flu-like symptoms.ou can have HIV and not have any symptoms, and some HIV tests will not show a positive result for as long as 3 months after infection. This is referred to as the HIV test window period, and has to do with how HIV tests detect the virus. Some people recently infected with HIV will experience some flu-like symptoms.