The majority of agents that cause disease in humans are viruses or bacteria, although the parasite that causes malaria is a notable example of a protozoan. There are a number of different routes by ...

Recent high-profile outbreaks have highlighted the global risk that infectious agents, both new and old ... we have the historic examples of plague and the influenza outbreak of 1918 to inform ...

Re-emergence of agents whose incidence of disease had significantly declined in the past ... is spread between people as easily as the swine H1N1 virus would be a very serious threat to human health.

Forty or fifty years ago, thanks to antibiotics, scientists thought medicine had all but eradicated infectious agents as a major health threat. Instead, the past two decades have seen an alarming ...

It is caused by an infectious agent whose precise identity is still ... it also provides classic examples of uncertainty in the process of science, the complex and vital relationship between ...