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ICSE Class 9 Answered

How does the following diseases spread?(a) Diarrhea(b) Dengue fever(c) Pneumonia
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer
(a) Diarrhea: Due to contaminated water or food.
(b) Dengue fever: Due to mosquito bite.
(c) Pneumonia: Due to air containing virus of pneumonia.
Answered by | 04 Jun, 2014, 03:23: PM
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