Without effective human intervention, epidemics and pandemics typically end only when the virus or bacteria has infected every available host and all have either died or become immune to the disease.
We risk our health much more during fights and sparring than by getting infected with coronavirus.
I'm very happy that Paul Ryan has decided to treat Donald Trump like a Zika mosquito: avoid contact, or you will be infected.
It's been studied to the point where we know that the impact on humans would be from consuming the most infected parts of the cow; that is, the brain and the spinal cord.
Great Britain had a much different situation than we do and did here in the United States, in that they had literally thousands of infected animals with human health risks. Their infectivity in this disease happened before very much was known about it.
I can't understand why the front pages of newspapers can cover bird flu and swine flu and everybody is up in arms about that and we still haven't really woken up to the fact that so many women in sub-Saharan Africa - 60 percent of people in - infected with HIV are women.
An AIDS-free generation would mean that virtually no child is born with HIV; that, as those children grow up, their risk of becoming infected is far lower than it is today; and that those who become infected can access treatment to help prevent them from developing AIDS and from passing the virus on to others.
Even the pandemic flu of 1918 only killed one to two percent of the people who were infected.
When you vaccinate someone, or when you get infected, the microbe is presenting itself to the immune system in a way that the immune system recognizes the important elements of the microbe and makes an immune response, both an antibody response and a cellular response, to ultimately contain the microbe.
All it takes is a single person coming into or going out of the jail or prison with COVID-19, and the entire jail will likely be infected. Most jails have people living in very close quarters.
