Explain various modes of transmission of …

Infectious diseases are transmitted from person to person by direct or indirect contact. Certain types of viruses, bacteria, parasites, and fungi can all cause infectious disease. Malaria, measles, and respiratory illnesses are examples of infectious diseases. Simple preventative measures, such as frequent hand washing, can cut down on disease transmission.

Modes of transmission of disease

• The diseases that spreads from an infected person to a healthy and disease free person are called communicable diseases.
• These diseases spreads when an infected person sneezes or coughs, they throw tiny droplets of water into the air that contains the microbes of the infection.
• A healthy person standing nearby when inhale the air they take in the infected air and may fall sick.
• Some example of communicable diseases are chicken pox, tuberculosis, Pneumonia, etc.
• These diseases also spreads when the excreta of an infected person somehow gets mixed with drinking water used by other people to drink.
• Diseases like cholera, typhoid spreads through this means and cause disease to a new host.
• Communicable diseases also spread through sexual intercourse between an infected person and a healthy person.
• Therefore, diseases like Acquired Immune Deficiency Syndrome (HIV/AIDS), syphilis are sexually transmitted diseases (STDs).