Common symptoms of AIDS include persistent swollen lymph nodes (lymphadenopathy), night sweats, and significant, unexplained weight loss. While neurological issues can occur in advanced stages, 'loss of memory' is not typically classified as a primary diagnostic symptom of AIDS in the same manner as the others listed.

AIDS (Acquired Immunodeficiency Syndrome) is caused by the HIV virus, which specifically targets and destroys CD4+ T-lymphocytes. These cells are essential for coordinating the immune response. As the population of T-helper cells declines, the body loses its ability to fight off opportunistic infections and cancers, confirming that the destruction of these cells is the direct cause of the immune system failure observed in AIDS patients.

AIDS is caused by the Human Immunodeficiency Virus (HIV). It is transmitted through the exchange of specific bodily fluids, including blood, semen, vaginal secretions, and breast milk. Key transmission routes include unprotected sexual intercourse, blood transfusions with contaminated blood, and vertical transmission from mother to child across the placenta or during birth. HIV is not transmitted by mosquitoes or other blood-sucking insects, as the virus does not replicate within them.

ELISA (Enzyme-Linked Immunosorbent Assay) is a widely used laboratory technique to detect antibodies or antigens in a sample. It is the standard screening test for HIV infection, which causes AIDS, by identifying specific viral proteins or host antibodies against the virus.

AIDS is caused by the Human Immunodeficiency Virus (HIV), a retrovirus. Anogenital warts are caused by the Human Papillomavirus (HPV), not by HIV. Therefore, attributing the cause of anogenital warts to AIDS is incorrect.

The statement is incorrect because a highly effective vaccine for Hepatitis B has been available for decades. Hepatitis C, however, does not currently have a vaccine. The other statements correctly describe transmission similarities, prevalence, and the often asymptomatic nature of chronic hepatitis infections.

ELISA (Enzyme-Linked Immunosorbent Assay) is a widely used laboratory technique to detect the presence of specific antibodies or antigens. It is famously utilized as a primary screening test for HIV, the virus that causes AIDS, by identifying viral proteins or host antibodies.

The Human Immunodeficiency Virus (HIV) specifically targets CD4+ T-lymphocytes, which are a crucial subset of white blood cells responsible for coordinating the immune response. By infecting and destroying these cells, the virus severely compromises the body's ability to fight off opportunistic infections and cancers, eventually leading to the condition known as AIDS.

HIV is transmitted through specific body fluids. Mosquitoes do not transmit HIV because the virus cannot survive or replicate within the insect, and the amount of blood transferred during a bite is insufficient for transmission.

Public health initiatives often prioritize the reduction of Sexually Transmitted Diseases (STDs) as a broad category. Addressing STDs is a comprehensive strategy that encompasses the prevention, screening, and treatment of various infections, which collectively contribute to significant morbidity and long-term health complications within the population.