Infectious disease is a major cause of social and economic instability, with pathogenic bacteria and viruses accounting for most cases worldwide. That said, colonization does not necessarily cause ...

Bacterial and viral acute sinus infections typically display similar symptoms. The duration of the infection can help determine if it is viral or bacterial. Many viruses, such as the ones that cause ...

On the ISS, viruses can still infect bacteria, but the process slows and pushes both organisms to evolve along different ...

It's an evolutionary battle, an endless competition for survival, that has spanned millions of years. Within this epic tale for the ages, the skillful characters are mighty, but very, very ...

DEAR DR. ROACH: I watched a show that described how a virus invades a cell and found it fascinating. What is the difference between a virus and a bacterial infection? — G.D. ANSWER: Viral infections ...

Most bacteria aren't harmful to humans, but most viruses are potentially harmful. Bacteria are living organisms, while viruses are parasitic and need a live host to reproduce. You can prevent the ...

Pneumonia is an infection of one or both lungs which affects alveoli, the tiny sacs found in clusters at the end of the branching structure of airways (respiratory tree) that supply air to the lungs.