NCERT Important Questions Class 9 Science biology Chapter 13
Important NCERT Extra Questions
Chapter 13 Why do We Fall ill
NCERT Book Extra Questions for Session 2022-2023
CBSE Board and UP Board Others state Board
What are the different means by which infectious diseases are spread?
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Infectious diseases are generally spread through air, through water, through sexual contact, through vectors (e.g., mosquito), through physical contact with affected person, through articles or formite borne (bedding, utensils, clothes, etc.) of use of affected person.