Drought Conditions Usa

Mosquitoes increase disease risk in USA

The risks include dengue fever, usually found in South and Central America , the Caribbean, Southeast Asia and sub-Saharan Africa, but which was reported in Key West in May 2010, and in Hawaii earlier this year.

The USA is increasingly at risk from these and other diseases "as world travel increases, public health and control programs fail, and climate change alters mosquito ecology and habitats," cautions Laura Harrington, an entomologist at Cornell University in Ithaca, N.Y.

Mosquito-transmitted diseases, such as malaria and dengue, affect more than 350 million people worldwide each year, Harrington says, leading to more than 3 million deaths. There is no vaccine and no treatment for dengue.

Also, chikungunya (CHICK-en GUN-ya), a little-known but deadly mosquito-transmitted virus, has yet to hit the USA, but could soon make its way here from Africa and Asia, Harrington says.

The threats are on the rise for the USA due to the introduction of the Asian tiger and African bush mosquitoes, which are transmitters of at least 22 different viruses that impact human health, including West Nile , dengue fever and encephalitis, she says.

Entomologists at Cornell are seeking funding from various federal agencies to help investigate new strategies to control diseases from mosquitoes. They're looking at ways to reduce egg production and curb the female mosquito's appetite for blood. Also, they're developing forecasting models to study how climate change will impact mosquito-borne diseases.

The parts of the country most at risk from disease-carrying mosquitoes, says Harrington, are the Mid-Atlantic and South.

"Once you get into the drier parts of the country, we don't see the species that are key to the transmission of these pathogens."

What's more, this week's intense heat and high humidity across the central and eastern USA is likely helping mosquitoes to breed, experts say, leading to what could be a banner late-summer for the outdoor pests.

Higher temperatures, coupled with rain, are the best weather conditions in which mosquitoes can breed, Harrington says.

But even in the absence of rain, humidity can also be helpful: "Humidity helps mosquitoes; it's better for their survival," Harrington says.

Drought Conditions Usa - News


Midwest turns dry as drought worsens in Plains
Midwest turns dry as drought worsens in Plains

The weekly US Drought Monitor, produced by a consortium of national climate experts, showed abnormally dry conditions affecting a significant area of the Midwest -- about 10 percent -- for the first time this summer. The areas included parts of Iowa



Mosquitoes increase disease risk in USA
Mosquitoes increase disease risk in USA

Heavy rains after drought conditions and very high tides can also trigger mosquito blooms Some species lay eggs in soil or sand and require water for hatching. Mosquitoes are more active on full-moon nights when they can see better.



Heat still grips Plains, South
Heat still grips Plains, South

•Drought has continued to expand across the southern USA. "Exceptional" drought conditions — the worst level — are occurring in a 1600-mile swath from southeastern Arizona to southern Georgia, according to the US Drought Monitor, a federal website.



Rain relieves Texas drought, South needs more
Rain relieves Texas drought, South needs more

The parched conditions in Texas, Arizona, Oklahoma, Louisiana and through parts of other southern states are persisting, and the high heat and lack of substantial rainfall are forecast to continue, according to a report issued on Thursday by US



Syngenta 2011 Half Year Results

Europe, Africa & the Middle East registered double digit volume growth in the first half despite the drought which hit several countries in the second quarter. Growth was particularly strong in the CIS where weather conditions improved compared with




The Weather UNIT: Major Drought Conditions In U.S.A.

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Drought Conditions Usa - Bookshelf

Plant production and management under drought conditions, papers presented at the symposium, 4-6 October 1982, held at Tulsa, OK, U.S.A.

Plant production and management under drought conditions, papers presented at the symposium, 4-6 October 1982, held at Tulsa, OK, U.S.A.


USA today

USA today

During last year's planting season, when moisture was critical, 60% to 70% of the prime growing area experienced severe drought conditions. ...

Starved for Science, How Biotechnology Is Being Kept Out of Africa

Starved for Science, How Biotechnology Is Being Kept Out of Africa

By 2007, more than 90 percent of all soybean acres in the United States and ... Robert Fraley, did tell USA Today that “Under severe drought conditions we ...

California Drought, Hydrological and Regulatory Water Supply Issues

California Drought, Hydrological and Regulatory Water Supply Issues

It appears that three years of hydrological drought conditions have created a ... and most recently the US Department of Agriculture on September 22 ...

Annual report of the Secretary of the Interior for the fiscal year ...

Annual report of the Secretary of the Interior for the fiscal year ...

Drought conditions. — A large portion of the arid region has been subject to ... The reclamation projects have been remarkably free from drought conditions, ...

Helpful Guide Directory


U.S. Drought Monitor
Maps current drought situations in the United States.

NOAA's Drought Information Center
Collection of NOAA Web sites and information on drought and climate conditions.

Drought Monitor


drought.gov
Texas drought lowered lake levels by 4% in June | Chron.com - Houston Chronicle ... Prolonged drought leaving 14 states parched - Boston.com. Big Water ...

A drought for the ages - USATODAY.com
Drought, a fixture in much of the West for nearly a decade, now covers more than one-third of the continental USA. And it's spreading. As summer starts, half the ...