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Question 3

How does the transmission of each of the following diseases take place?
(a) Amoebiasis
(b) Malaria
(c) Ascariasis
(d) Pneumonia

Answer

 

Disease

Causative organism

Mode of transmission

a.

Amoebiasis

Entamoeba histolytica

It is a vector-borne disease that spreads by the means of contaminated food and water. The vector involved in the transmission of this disease is the housefly.

b.

Malaria

Plasmodium sp.

It is a vector-borne disease that spreads by the biting of the female Anopheles mosquito.

c.

Ascariasis

Ascaris lumbricoides

It spreads via contaminated food and water.

d.

Pneumonia

Streptococcus pneumoniae

It spreads by the sputum of an infected person.

 

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