Bacteria - SS3 Agriculture Lesson Note

Bacteria are single-celled microorganisms that can cause various diseases in humans. They have different modes of transmission, including:

Direct Contact: Many bacterial infections spread through direct contact with an infected person or their bodily fluids. For example, skin-to-skin contact can transmit bacteria responsible for skin infections like impetigo.

Indirect Contact: Bacteria can also be transmitted indirectly through contaminated objects or surfaces. 

Airborne Transmission: Some bacteria become airborne when an infected person coughs, sneezes, or talks. Others can form spores that become airborne and can be inhaled. Tuberculosis is an example of a disease spread through airborne bacteria.

Vector-Borne: Certain bacteria are transmitted by vectors like insects. For instance, ticks can transmit the bacterium that causes Lyme disease.