Explain various modes of transmission of infectious diseases.
Different modes of transmission of infectious diseases are -
(a) Through air − The microorganisms that cause diseases such as influenza, chicken pox, etc., are transmitted through air as and when the infected person sneezes or coughs.
(b) Through water − The microorganisms that cause diseases such cholera, typhoid, etc., spread through contaminated water containing the faeces of infected individuals.
(c) Blood to blood contact − This occurs during blood transfusion, pregnancy, etc. For example - AIDS.
(d) Animal vectors − Insects carry disease-causing microbes in their saliva and transmit them to the healthy individuals by biting them. Malaria and dengue are spread in this way
(e) Direct physical contact − AIDS and syphilis are sexually-transmitted diseases.
Different modes of transmission of infectious diseases are -
(a) Through air − The microorganisms that cause diseases such as influenza, chicken pox, etc., are transmitted through air as and when the infected person sneezes or coughs.
(b) Through water − The microorganisms that cause diseases such cholera, typhoid, etc., spread through contaminated water containing the faeces of infected individuals.
(c) Blood to blood contact − This occurs during blood transfusion, pregnancy, etc. For example - AIDS.
(d) Animal vectors − Insects carry disease-causing microbes in their saliva and transmit them to the healthy individuals by biting them. Malaria and dengue are spread in this way
(e) Direct physical contact − AIDS and syphilis are sexually-transmitted diseases.
