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Showing posts with label ticks. Show all posts
Showing posts with label ticks. Show all posts

Thursday, July 26, 2012

Lyme disease in Ky. probably more common than reported


Nearly anyone who has spent considerable time in the woods this summer has later discovered they carried a visitor back with them — one the size of a freckle who latches on for dear life. Ticks are not uncommon in Kentucky, though Lyme disease, which is spread through the bite of a black-legged deer tick, is not commonly seen in the state.

But those numbers are likely under-reported, Keiara Carr reports for The Courier-Journal, in part because "Current medical guidelines say the disease is so rare in Kentucky that doctors should look for alternative causes for symptoms that might suggest Lyme disease."

Only five cases were reported in Kentucky in each of the past two years and there was just one case in 2009. But it's likely cases went under-reported because doctors don't give the blood test that diagnoses Lyme. They just don't feel it's necessary given the rarity of the disease in the area, Carr reports.

But Mike Gatton of Louisville knows all too well that it's possible. He got bitten by a tick while mowing his lawn two years ago. He developed a rash on his leg but when he went to the doctor he was tested for a variety of diseases, including West Nile, multiple sclerosis and Lou Gehrig disease, but not Lyme. "I was feeling more and more fatigued. I was having severe headaches. I was really concerned," he said.

When he got another tick bite a year ago and had the same reaction he had to the first bite, he put the tick in a vial and brought it to his doctor, who still dismissed the possibility of Lyme. He is now being treated with antibiotics he takes intravenously.

Symptoms of Lyme disease include fever, headache and fatigue. Sometimes, a rash that looks like a bull's eye around the tick bite can develop. Usually, people get better with large doses of antibiotics. If left untreated, "the infection can be painful and debilitating, causing arthritis or spreading to the heart and nervous system," Carr reports.

Guidelines by the Infectious Disease Society of America "to help doctors decide if a patient is eligible for treatment say the patient should have received the tick bite in an 'endemic area," Carr reports, which makes sense according to Paul Mead, a consulting physician for the Centers for Disease Control and Prevention. "For example, a physician in Africa evaluating a child for fever should have malaria at the top of his list; a physician in Kentucky should not," he said. (Read more)



Nearly anyone who has spent considerable time in the woods this summer has later discovered they carried a visitor back with them — one the size of a freckle who latches on for dear life. Ticks are not uncommon in Kentucky, though Lyme disease, which is spread through the bite of a black-legged deer tick, is not commonly seen in the state.

But those numbers are likely under-reported, Keiara Carr reports for The Courier-Journal, in part because "Current medical guidelines say the disease is so rare in Kentucky that doctors should look for alternative causes for symptoms that might suggest Lyme disease."

Only five cases were reported in Kentucky in each of the past two years and there was just one case in 2009. But it's likely cases went under-reported because doctors don't give the blood test that diagnoses Lyme. They just don't feel it's necessary given the rarity of the disease in the area, Carr reports.

But Mike Gatton of Louisville knows all too well that it's possible. He got bitten by a tick while mowing his lawn two years ago. He developed a rash on his leg but when he went to the doctor he was tested for a variety of diseases, including West Nile, multiple sclerosis and Lou Gehrig disease, but not Lyme. "I was feeling more and more fatigued. I was having severe headaches. I was really concerned," he said.

When he got another tick bite a year ago and had the same reaction he had to the first bite, he put the tick in a vial and brought it to his doctor, who still dismissed the possibility of Lyme. He is now being treated with antibiotics he takes intravenously.

Symptoms of Lyme disease include fever, headache and fatigue. Sometimes, a rash that looks like a bull's eye around the tick bite can develop. Usually, people get better with large doses of antibiotics. If left untreated, "the infection can be painful and debilitating, causing arthritis or spreading to the heart and nervous system," Carr reports.

Guidelines by the Infectious Disease Society of America "to help doctors decide if a patient is eligible for treatment say the patient should have received the tick bite in an 'endemic area," Carr reports, which makes sense according to Paul Mead, a consulting physician for the Centers for Disease Control and Prevention. "For example, a physician in Africa evaluating a child for fever should have malaria at the top of his list; a physician in Kentucky should not," he said. (Read more)


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Monday, April 14, 2008

Cytauxzoonosis in Domestic Cats

Reichard, M. V., K. A. Baum, et al. (2008). "Temporal occurrence and environmental risk factors associated with cytauxzoonosis in domestic cats." Vet Parasitol 152(3-4): 314-20.

Cytauxzoonosis is caused by Cytauxzoon felis, a protozoan parasite of domestic and wild cats that is transmitted by ticks. The disease is seen in the south-central and southeastern U.S. Cytauxzoonosis is typically a severe disease in domestic cats, with fever , anorexia, anemia, and icterus. Most affected cats die within 3 weeks. This study determined the temporal occurrence and risk factors associated with C. felis infection in domestic cats in Oklahoma with a retrospective search of electronic medical records from the Oklahoma Animal Disease Diagnostic Laboratory and the Boren Veterinary Medical Teaching Hospital. From 1995 to 2006, a total of 232 cytauxzoonosis cases were identified and analyzed. The number of cases remained constant from year to year. Diagnosis of the disease followed a bimodal pattern, with most cases diagnosed in April-June and a smaller number in August-September. In cases where a client address was known, the majority occurred in low density residential areas. Cytauxzoonosis cases were significantly associated with more wooded cover and closer proximity to natural or unmanaged areas than control sites. More cases can be expected in domestic cats living in close proximity to environments that support both ticks and bobcats.
>> PubMed abstract

Related articles:
Haber, M. D., M. D. Tucker, et al. (2007). "The detection of Cytauxzoon felis in apparently healthy free-roaming cats in the USA." Vet Parasitol 146(3-4): 316-20.
>> PubMed abstract

Birkenheuer, A., J. Le, et al. (2006). "Cytauxzoon felis infection in cats in the mid-Atlantic states: 34 cases (1998-2004)." J Amer Vet Med Assoc 228(4): 568-571.
>> PubMed abstract

More on cat health: Winn Feline Foundation Library
Reichard, M. V., K. A. Baum, et al. (2008). "Temporal occurrence and environmental risk factors associated with cytauxzoonosis in domestic cats." Vet Parasitol 152(3-4): 314-20.

Cytauxzoonosis is caused by Cytauxzoon felis, a protozoan parasite of domestic and wild cats that is transmitted by ticks. The disease is seen in the south-central and southeastern U.S. Cytauxzoonosis is typically a severe disease in domestic cats, with fever , anorexia, anemia, and icterus. Most affected cats die within 3 weeks. This study determined the temporal occurrence and risk factors associated with C. felis infection in domestic cats in Oklahoma with a retrospective search of electronic medical records from the Oklahoma Animal Disease Diagnostic Laboratory and the Boren Veterinary Medical Teaching Hospital. From 1995 to 2006, a total of 232 cytauxzoonosis cases were identified and analyzed. The number of cases remained constant from year to year. Diagnosis of the disease followed a bimodal pattern, with most cases diagnosed in April-June and a smaller number in August-September. In cases where a client address was known, the majority occurred in low density residential areas. Cytauxzoonosis cases were significantly associated with more wooded cover and closer proximity to natural or unmanaged areas than control sites. More cases can be expected in domestic cats living in close proximity to environments that support both ticks and bobcats.
>> PubMed abstract

Related articles:
Haber, M. D., M. D. Tucker, et al. (2007). "The detection of Cytauxzoon felis in apparently healthy free-roaming cats in the USA." Vet Parasitol 146(3-4): 316-20.
>> PubMed abstract

Birkenheuer, A., J. Le, et al. (2006). "Cytauxzoon felis infection in cats in the mid-Atlantic states: 34 cases (1998-2004)." J Amer Vet Med Assoc 228(4): 568-571.
>> PubMed abstract

More on cat health: Winn Feline Foundation Library
Read More