Question

Mention the method of transmission of following diseases,cholera,HIV AIDS, Malaria, Pneumonia

Answer 1

CHOLERA

Cholera is caused by the bacterium Vibrio cholera . It is transmitted by flies , contaminated water and food .

AIDS

The disease of AIDS is caused by retrovirus ( a RNA virus ) known as Human Immunodeficiency virus ( HIV ) .

1) The AIDS disease spreads through the transfusion of blood contaminated with an AIDS virus .
2) The AIDS disease also spreads through the use of infected injections . ( I.e., sharing of infected injection needles which have not been sterilised .

MALARIA

Malaria is caused by a protozoa parasite plasmodium . This disease spreads through the bite of an insect vector- the female Anopheles mosquito which feeds on human blood .

PNEUMONIA

It is a serious form of pneumonia . It is caused by a virus . Infection with the SARS virus causes acute respiratory distress ( severe breathing difficulty ) and sometimes death

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Answer 2

cholera=contaminated water
HIV AIDS =mixing of body fluid
Malaria= through a vector like a mosquito
pneumonia=way of someone sneezing or coughing. When a person sneezes or coughs, little droplets spread throughout the air.