Viruses and bacteria: Historically, pandemics are caused by viruses/bacteria that can easily spread. Some of the viruses/bacteria have been spread via human to human contact, and others via a vector such as mosquitos , fleas or animals. Circumstances that contribute to pandemic spread are overcrowding/population density, extensive travel/mobility, poor sanitation, widespread chronic disease and poor medical systems
Answered 5/24/2020
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COVID 19 pandemic: Very serious- as of 24 May 2020 there were 99,252 reported deaths in the US & 346,235 reported deaths worldwide. Pandemics occur when potent germs (bacteria or viruses) are spread to people whose immune systems can't build an adequate response. In the case of COVID 19, it is because it is a novel or new virus that are bodies are "naive" to
Answered 5/25/2020
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