How is Hepatitis B primarily transmitted?

Hepatitis B is primarily transmitted through sexual contact or sharing needles. This mode of transmission involves direct exposure to infected blood or bodily fluids, which can occur during unprotected sexual activities or when individuals use shared equipment, such as needles or syringes, for drug use. This is a critical aspect of understanding Hepatitis B, as it highlights the need for safe practices to prevent its spread.

The other options do not accurately reflect the primary transmission methods for Hepatitis B. Contaminated water is not a vector for this virus; instead, it is mainly spread through intimate contact and exposure to blood. Airborne particles do not carry Hepatitis B, since it is not an airborne virus. Insect bites are also not involved in the transmission process, as Hepatitis B cannot be transmitted through bites from mosquitoes or other insects. Understanding these distinctions is essential for recognizing how to effectively prevent and respond to Hepatitis B infections.