- Guinea was declared free of Ebola transmission on Tuesday after more than 2,500 people died from the virus in the West African nation, leaving Liberia as the only country still counting down the days until the end of the epidemic.
- A history of asthma may leave people especially vulnerable to developing shingles later on in life.
- Tiny turtles, a staple of many school science labs and an appealing family pet for people allergic to cats and dogs, may also be responsible for a growing number of salmonellosis outbreaks, a U.S. study suggests.
- An unprecedented surge in babies born with microcephaly has driven Brazilian officials to warn couples against getting pregnant until more is known about the situation.
- Nearly a quarter of Americans who have heard of recent E. coli outbreaks at Chipotle Mexican Grill said they are eating less often at its restaurants, a new Reuters/Ipsos poll showed on Tuesday, while social media sentiment towards the chain hit a low.
- A 17-year-old woman contracted a rare but treatable disease known as rat-bite fever from her pet rodents.
- The FDA said on Tuesday it is investigating the more recent outbreak of a rare strain of E.coli linked to Chipotle Mexican Grill Inc.
- An outbreak of E. coli linked to rotisserie chicken salad sold by warehouse club operator Costco Wholesale Corp appears to be over, the U.S. Centers for Disease Control (CDC) said on Tuesday.
- Iraq has banned all fresh and frozen poultry imports from France where an outbreak of avian flu has been reported, Deputy Agriculture Minister Mahdi al-Qaisi said on Tuesday.
- A new study attempts to track down the culprit behind a polio-like illness that can paralyze its often young victims.
- Federal authorities are investigating a new E.coli strain linked to Chipotle Mexican Grill Inc, piling more pressure on the popular burrito chain already grappling with an outbreak that has affected about 50 people in nine states.
- Despite good science and positive reviews, Truvada, a pre-exposure prophylaxis to prevent HIV infection, is not utilized as often as many activists might have hoped.
An infection is the immune response to a colonization of a host organism by parasite species. Infecting parasites seek to use the host's resources to reproduce, often resulting in disease. Colloquially, infections are usually considered to be caused by microorganisms or microparasites like viruses, prions, bacteria, and viroids, though larger organisms like macroparasites and fungi can also infect.