CDC: West Nile virus illness continue to decline

Jul 01, 2010

(AP) -- Last year's West Nile virus season was the mildest in eight years, and just one case of serious illness has been reported so far this year.

U.S. health officials on Thursday said there were 386 cases of severe West Nile illness and 33 deaths last year. That's a far cry from the peak years of 2002 and 2003, when illnesses numbered nearly 3,000 and deaths surpassed 260.

West Nile was first reported in the United States in 1999. It's spread by mosquitoes that often pick up the virus from birds they bite. Most cases occur in July through September.

Severe symptoms including neck stiffness, disorientation, coma and .

One possible reason for fewer cases is that birds may be developing immunity to the virus.

Explore further: Travel restrictions could worsen Ebola crisis: experts

More information: CDC report: http://www.cdc.gov/mmwr

5 /5 (2 votes)
add to favorites email to friend print save as pdf

Related Stories

Hurricanes help stop West Nile virus

Jan 23, 2006

Hurricanes caused widespread damage last year across southern Louisiana, but they reportedly produced one benefit: they helped stop West Nile virus.

Study shows long-term West Nile effects

Aug 16, 2006

U.S. medical experts say half of those infected with West Nile virus have ongoing health concerns more than a year later, including fatigue and tremors.

New and improved test for West Nile virus in horses

Aug 20, 2008

A new test for West Nile virus in horses that could be modified for use on humans and wildlife may help track the spread of the disease, according to an article in the September issue of the Journal of Medical Microbiology.

Recommended for you

Travel restrictions could worsen Ebola crisis: experts

3 hours ago

Travel restrictions could worsen West Africa's Ebola epidemic, limiting medical and food supplies and keeping out much-needed doctors, virologists said Tuesday as the disease continued its deadly spread.

World 'losing battle' to contain Ebola: MSF (Update)

4 hours ago

International medical agency Medecins sans Frontieres said Tuesday the world was "losing the battle" to contain Ebola as the United Nations warned of severe food shortages in the hardest-hit countries.

Mutating Ebola viruses not as scary as evolving ones

4 hours ago

My social media accounts today are cluttered with stories about "mutating" Ebola viruses. The usually excellent ScienceAlert, for example, rather breathlessly informs us "The Ebola virus is mutating faster in humans than in animal hosts ...

War between bacteria and phages benefits humans

5 hours ago

In the battle between our immune systems and cholera bacteria, humans may have an unknown ally in bacteria-killing viruses known as phages. In a new study, researchers from Tufts University, Massachusetts ...

Ebola kills 31 people in DR Congo: WHO

7 hours ago

An outbreak of the Ebola virus in the Democratic Republic of Congo has killed 31 people and the epidemic remains contained in a remote northwestern region, UN the World Health Organization (WHO) said Tuesday.

User comments : 0