Hantavirus, West Nile: How to avoid infection

Associated Press
Mosquitos are sorted at the Dallas County mosquito lab in Dallas, Thursday, Aug. 16, 2012. The last time Dallas used aerial spraying to curb the mosquito population, Texas’ Lyndon Johnson was in the White House, Mission Control in Houston was launching Gemini missions and encephalitis was blamed for more than a dozen deaths. But for the first time in more than 45 years, the city and county planned Thursday to resume dropping insecticide from the air to combat the nation’s worst outbreak of West Nile virus, which has killed 10 people and caused at least 200 others to fall ill. (AP Photo/LM Otero)

By Marilynn Marchione
Associated Press

The “bugs” of late summer are biting. The nation is having its worst West Nile virus season in a decade, and up to 10,000 people who stayed in California cabins are at risk of hantavirus. A second case of bubonic plague in the West has been confirmed — in a girl in Colorado — and scientists fear that a bumper crop of ticks could spread Lyme disease, the nation’s most common bug-borne malady.

Yet the risk of getting these scary-sounding diseases is small. With the right precautions, you can still enjoy spending time outdoors. And that helps fight much more common threats to your health — obesity and too little exercise.

HANTAVIRUS

How it’s spread: Touching or breathing air particles of urine or droppings from certain types of mice or rats, especially deer mice.

Symptoms: Develop one to six weeks later and can include flulike symptoms that progress into a dry cough, headache, nausea and vomiting, then shortness of breath.

Where it occurs: Anywhere in the U.S.; recent cases were in Yosemite National Park in California.

Prevention: Keep rodents out of your home; carefully clean any nests with disinfectant or bleach and water.

WEST NILE

How it’s spread: Mosquitoes

Symptoms: Most people have none; some develop flulike symptoms; a very small percentage get neurological symptoms.

Where it occurs: Nearly all states; this year, Texas has been hardest-hit.

Prevention: Eliminate standing water that can breed mosquitoes; use insect repellents containing DEET, picaridin, IR3535 or oil of lemon eucalyptus.

BUBONIC PLAGUE

How it’s spread: Contact with an infected fleas, rodent or cat; prairie dogs in Colorado can carry it.

Symptoms: Sudden fever, headache, chills, weakness and swollen lymph nodes.

Where it occurs: Only about half a dozen cases occur each year across the country, mostly in the Southwest.

Prevention: Avoid contact with rodents; limit brush, rock and wood piles and rodent breeding areas near the home.

LYME DISEASE

How it’s spread: Ticks.

Symptoms: Fever, headache, fatigue and a bulls-eye rash. Untreated, it can cause joint, heart and nervous system problems.

Where it occurs: Northeast and mid-Atlantic coastal states; North central states, mostly Wisconsin and Minnesota; the West Coast, especially northern California.

Prevention: Use bug repellents with 20 percent or more DEET; when in the woods, walk in the center of trails, avoiding brush; shower soon after coming inside and check your body, hair and clothes for ticks.

(Also helps prevent other tick-borne diseases such as ehrlichiosis, Rocky Mountain spotted fever, tularemia and babesiosis).