Understanding Ebola
Ebola is a highly dangerous viral disease that was first identified in Africa in 1976. It has the potential to be fatal and can spread from certain animals to humans, as well as between humans through contact with infected bodily fluids. Researchers have discovered that the virus can remain active in the body for up to seven days after death. Moreover, it can survive in dried blood for as long as five days. Interestingly, the virus has also been detected in urine and feces, suggesting that wastewater and sewage systems may serve as potential reservoirs for the infection, although the exact duration remains unknown.
Chickenpox
Chickenpox and shingles are caused by the varicella-zoster virus. This virus is highly contagious and can be transmitted through the respiratory tract or through direct contact with the lesions until they scab over. The virus can also survive on surfaces and fabrics for a few hours to two days, posing a risk of transmission. However, the introduction of the varicella vaccine in 1995 has had a significant impact on the infection rate. In the United States, the number of annual cases has decreased from four million to a much lower number.