50 dead from new killer fungus in the USA

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50 dead from new killer fungus in the USA

A potentially deadly airborne fungus, widely dubbed the killer fungus, has infected more than 50 people in the U.S and is expected to spread from the Pacific Northwest where it first surfaced.

The killer fungus, which first surfaced in Canada in 1999, appeared in the U.S. in Washington in early 2006. Since then, reports of cases have occurred in Oregon and Northern California.

... Quote:
We wouldn't recommend that people change their habits in any way. We wouldn't recommend people stay indoors or don't go hiking or don't go outdoors. The fungus species triggering the infection is Cryptococcus gattii, which can cause pneumonia or meningitis. But the infection is not common enough for people to warrant changing behavior. It's still very rare. People should be concerned but not alarmed.
said Julie Harris a staff epidemiologist with the CDC

At a news briefing Friday, Katrina Hedberg, interim state epidemiologist for the Oregon Department of Health Services Public Health Division, told reporters that it's also rare that people exposed to the fungus end up getting sick.

While the CDC wouldn't specify the number of deaths, citing incomplete data, Hedberg says that ''of the 50-plus cases, around 10 of them have died."

Twelve of those 50 cases, including three deaths, have been in the state of Washington, according to Nicola Marsden-Haug, MPH, an epidemiologist with the Washington State Department of Health, Shoreline.

Marcia Goldoft, MD, a medical epidemiologist with the department, urges people to keep the threat in perspective. "The benefits of outdoor activity and exercise far outweigh the risks of a rare disease such as C. gattii."

Tracking the Fungus

Researchers in the U.S. have been studying the fungus, traditionally located in tropical locations, for several years. The fungus originates in soil and is associated with certain tree species, and becomes airborne.

While the fungus was typically seen in tropical areas of South America and other tropical and subtropical regions, it surfaced in Vancouver Island, Canada, in 1999, says Heitman, the senior author on a report on the fungus published online this week in the journal PLoS Pathogens.
... Quote:
It is a microbial pathogen that can cause significant illness and even death, but it is very uncommon' Infections can be treated with antifungal agents, but no vaccine is available for C. gattii. The first recorded U.S. case was in Orcas Island, Wash. That was followed by cases in Washington and Oregon.

The 50 reported cases have occurred in Washington, Oregon, and Northern California. Unlike another fungus type, Cryptococcus neoformans, which typically infects those who are HIV-positive or other immunocompromised people, the C. gattii fungus can infect apparently healthy people. The 50 cases, include people from age 15 to 95.
Heitman says.

How the Fungus Spreads

''The fungus is present in the environment," Hedberg says. "It's present in soil or in trees." As trucks transport lumber down the I-5 corridor in the Pacific Northwest, she says, the fungus has likely spread.

The airborne fungus is inhaled. "People have to inhale it to get sick," Hedberg says. "It's not spread from person to person at all."

And, she adds, many are exposed but few actually get sick.

The time from exposure to the fungus to onset of symptoms varies, Heitman says. It could be two to eight months.
Fungus Symptoms

Four symptoms are typical of infection with C. gattii, says Harris of the CDC. They include:

* Severe headache
* Fever
* Chills
* Shortness of breath

Some people infected with the fungus have just one of the symptoms, she tells WebMD, but often they have all four.

See your doctor if you experience the symptoms and think you may have been exposed, she advises.

She encourages doctors to be alert to the symptoms in patients, especially if they live in or have visited the Pacific Northwest.


By netchicken: posted on 25-4-2010

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