What are infectious agents?
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Infectious agents are those unicellular and multicellular organisms that cause infectious diseases.Infectious agents are broadly divided into 5 categories --->
1) Virus ---> AIDS, Common cold, influenza, zika,etc
2) Bacteria ----->Typhoid, Cholera, Tuberculosis,Diarrhoea,etc
3)Fungi ----> Ringworm,Athlete's foot,etc
4) Protozoa ---> Malaria, Sleeping sickness, Kala-azar,etc
5) Worms ---> Ascariasis, Elephantiasis