Communicable Disease

Infectious diseases refer to those diseases that can spread from one person to another. This spread is not only from people to people, but also from animals to people, from animals to animals, or from people to animals. Today, the prevalence of infectious diseases has decreased to a great extent. Rather, non-communicable life-threatening diseases are emerging in epidemic form.

Mode of transmission of infectious diseases:

Touch: Several diseases are spread this way. Like scabies, a fungal skin disease.
Sexual contact: AIDS , syphilis , gonorrhea, hepatitis (B, C), human papilloma virus infection which is one of the causes of cervical cancer, lymphogranuloma venereum, chancroid.
Food and drink: Typhoid, poliomyelitis , hepatitis (A, D), cholera, diarrhoea, dysentery, various worm infections.
Airborne: Tuberculosis, influenza, whooping cough, meningitis , pneumonia, bronchitis , bronchiolitis, mumps, rubella, chicken pox, measles, corona virus disease.
Vector Carried: Mosquitoes: Dengue, Chikungunya, Yellow Fever, Malaria, Filariasis. Flies: Diarrhea, Dysentery, Creamy Infection, Black Fever , Chagas Disease, Sleeping Sickness, Deer Fly.
Through the skin: Some disease agents can be spread by direct skin-to-skin contact, such as Tinea capitis, the fungus that causes ringworm, Tinea pedis, the fungus that causes athlete’s foot, and impetigo. However, the disease is probably most often spread by fomites.

Risk of Infection

People with congenitally low immunity including diabetics are at higher risk of infection. Some diseases also reduce the body’s immunity, such as AIDS, tuberculosis, black fever, cancer. Moreover, very young children and very old people are at high risk of infection.

Source: https://bn.wikipedia.org/wiki/Infectious_Diseases