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Answer:
Chicken pox, Tuberculosis, etc.
Explanation:
Chickenpox was caused by a infectious agent by inoculating volunteers with vesicular fluid from a patient with acute varicella.
Tuberculosis originated from East Africa and is caused by poverty,HIV infection, homelessness, substance abuse,organ transplants,etc. It can also be transmitted by air if you are near and breathe the same air as someone with Tuberculosis you can get it.