VETERINARY
ASSOCIATES STONEFIELDSunday, August 21, 2005
WESTNILE VIRUS UPDATE
Recent warning from Dr. Pat Redig, University of Minnesota.
Below is a report received today containing CDC information about West Nile activity as of August 12th. As expected it is starting to ramp up and become more prevalent and with recent rains in much of the midwest and west in the last couple of weeks, there is clearly more to come until such time as we get some good frosts. With the exception of Vermont, it would appear that the East and Northeast are inactive, but the midwest, south (Louisiana westward) and the West need to take heed. As folks are starting to work with their birds in the field now, the exposure potential increases.
Anyone flying goshawks, coopers, red-tails, merlins, and kestrels really should have them or get them vaccinated immediately using the Fort Dodge killed vaccine (1cc for birds at 700 grams - 20 oz or more, proportionately smaller amounts for smaller birds down to about 0.3 cc for kestrels) 2 doses, 3 weeks apart. Don't wait for an outbreak on your doorstep to vaccinate as it takes a couple of weeks for the immune system to develop antibodies. Previously vaccinated birds should receive a single booster shot.
Here's the report: Current for data reported to CDC through ArboNET as of 3 a.m. Mountain Daylight Time, August 9, 2005.
Twenty-two states have reported 187 cases (3 deaths) of human WNV illness in 2005 (Arizona, Arkansas, California, Colorado, Florida, Georgia, Illinois, Indiana, Kansas, Louisiana, Minnesota, Mississippi, Missouri, Nevada, New Mexico, New York, North Carolina, North Dakota, Ohio, Pennsylvania, South Dakota, and Texas) 57% of the 171 cases for which such data were available occurred in males (median age 47 years (range: 4-85 years). Date of illness onset May 14 to August 4.
Fifty-four presumptive WNV blood donors (PVDs) have been reported to ArboNET during 2005: 25 from California, 18 from Texas, 5 from South Dakota, 3 from Arizona, and one each from Iowa, Louisiana, and Mississippi. Of the 54 PVDs, 11 persons subsequently had West Nile fever (median age: 50 years, range: 17-77 years) .
In addition, 1,162 dead corvids and 248 other dead birds with WNV infection have been reported from 32 states. WNV infections have been reported in horses from 21 states (Alabama, Arizona, California, Colorado, Idaho, Illinois, Kansas, Kentucky, Minnesota, Mississippi, Missouri, Nebraska, Nevada, New Mexico, North Dakota, Ohio, Oklahoma, South Dakota, Texas, Vermont, and Wyoming), one dog from Nebraska, and one squirrel from Arizona. WNV seroconversions have been reported in 126 sentinel chicken flocks from nine states (Arizona, Arkansas, California, Florida, Iowa, Louisiana, North Dakota, New Mexico, and Utah). One seropositive sentinel horse was reported from Minnesota. A total of 2,493 WNV-positive mosquito pools have been reported from 27 states (Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Georgia, Idaho, Illinois, Indiana, Kansas, Louisiana, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, Nevada, New Jersey, New Mexico, Ohio, Pennsylvania, South Dakota, Tennessee, Texas, Utah, and Virginia).
Ragards,
Darryl A. Perkins
NAFA President
14 Union StreetBlackstone, MA 01504-1111
Recent warning from Dr. Pat Redig, University of Minnesota.
Below is a report received today containing CDC information about West Nile activity as of August 12th. As expected it is starting to ramp up and become more prevalent and with recent rains in much of the midwest and west in the last couple of weeks, there is clearly more to come until such time as we get some good frosts. With the exception of Vermont, it would appear that the East and Northeast are inactive, but the midwest, south (Louisiana westward) and the West need to take heed. As folks are starting to work with their birds in the field now, the exposure potential increases.
Anyone flying goshawks, coopers, red-tails, merlins, and kestrels really should have them or get them vaccinated immediately using the Fort Dodge killed vaccine (1cc for birds at 700 grams - 20 oz or more, proportionately smaller amounts for smaller birds down to about 0.3 cc for kestrels) 2 doses, 3 weeks apart. Don't wait for an outbreak on your doorstep to vaccinate as it takes a couple of weeks for the immune system to develop antibodies. Previously vaccinated birds should receive a single booster shot.
Here's the report: Current for data reported to CDC through ArboNET as of 3 a.m. Mountain Daylight Time, August 9, 2005.
Twenty-two states have reported 187 cases (3 deaths) of human WNV illness in 2005 (Arizona, Arkansas, California, Colorado, Florida, Georgia, Illinois, Indiana, Kansas, Louisiana, Minnesota, Mississippi, Missouri, Nevada, New Mexico, New York, North Carolina, North Dakota, Ohio, Pennsylvania, South Dakota, and Texas) 57% of the 171 cases for which such data were available occurred in males (median age 47 years (range: 4-85 years). Date of illness onset May 14 to August 4.
Fifty-four presumptive WNV blood donors (PVDs) have been reported to ArboNET during 2005: 25 from California, 18 from Texas, 5 from South Dakota, 3 from Arizona, and one each from Iowa, Louisiana, and Mississippi. Of the 54 PVDs, 11 persons subsequently had West Nile fever (median age: 50 years, range: 17-77 years) .
In addition, 1,162 dead corvids and 248 other dead birds with WNV infection have been reported from 32 states. WNV infections have been reported in horses from 21 states (Alabama, Arizona, California, Colorado, Idaho, Illinois, Kansas, Kentucky, Minnesota, Mississippi, Missouri, Nebraska, Nevada, New Mexico, North Dakota, Ohio, Oklahoma, South Dakota, Texas, Vermont, and Wyoming), one dog from Nebraska, and one squirrel from Arizona. WNV seroconversions have been reported in 126 sentinel chicken flocks from nine states (Arizona, Arkansas, California, Florida, Iowa, Louisiana, North Dakota, New Mexico, and Utah). One seropositive sentinel horse was reported from Minnesota. A total of 2,493 WNV-positive mosquito pools have been reported from 27 states (Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Georgia, Idaho, Illinois, Indiana, Kansas, Louisiana, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, Nevada, New Jersey, New Mexico, Ohio, Pennsylvania, South Dakota, Tennessee, Texas, Utah, and Virginia).
Ragards,
Darryl A. Perkins
NAFA President
14 Union StreetBlackstone, MA 01504-1111
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