list out any 2 bacterial and 2 viral diseases causes in human write mode of transmission and preventive steps
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viral diseases:Chickenpox.
Flu (influenza)
bacterial diseases:gonorrhea, neisseria meningitidis.
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Description: The chain of infection has 3 main parts. A reservoir such as a human and an agent such as an amoeba. The mode of transmission can include direct contact, droplets, a vector such as a mosquito, a vehicle such as food, or the airborne route
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