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 is the virus that causes AIDS (acquired immunodeficiency syndrome). If a pregnant woman is infected with HIV, the virus can be passed to and infect her baby. The screening tests detect HIV antigen (p24) and/or HIV antibodies in the blood. The combination HIV antibody and antigen test is the recommended screening test for HIV. It is available only as a blood test.