question_answer 3)

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

Answer:

   

Disease	Mode of transmission
(a) Amoebiasis	Direct and oral. The tetranucleate cysts are ingested with contaminated food and water.
(b) Malaria	Indirect and inoculative. The sporozoites are introduced along with the saliva of vector female Anopheles mosquitoes.
(c) Ascariasis	Direct and oral. Capsules with second juveniles   are  ingested  with contaminated food and water.
(d) Pneumonia	Air borne or through droplet infection or aerosols or contaminated utensils. Bacterial cysts are spread by sputum of the patients.