+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Occult infection of dirofilaria immitis in stray dogs captured in hyogo prefecture japan

Occult infection of dirofilaria immitis in stray dogs captured in hyogo prefecture japan

Japanese Journal of Parasitology 39(5): 425-430

A study on occult Dirofilaria immitis infection was conducted with a total of 310 stray dogs captured in Hyogo Prefecture. It was found that 182 out of 310 (58.7%) dogs were positive for D. immitis adult worms. These positive dogs formed the basis for a detailed study to examine the number and sex of the adult worms in the heart and to determine the presence of mf in the blood. The cases of occult infection, that is, dogs with adult worms in the heart but without circulating mf accounted for 24.7% of the positive dogs. These are 14.8% of unisexual infection, 1.6% of sterility resulting from immaturity, aging, or drugs, and 8.2% of immune-mediated infections (complete). In 6 cases (3.3%), mf were found in the blood but in extremely small numbers compared with other dogs infected with roughly the same number of adult D. immitis. For these cases, examination of the levels of anti-cuticular antibody to mf were detected so that these 6 cases should also be considered as a type of immune-mediated occult infection. These are probably instances of an incomplete or transitional occult infection. The total incidence of an immune-mediated occult infection thus amounted to 11.5% (complete and incomplete) of the positive dogs.

(PDF emailed within 1 workday: $29.90)

Accession: 007608848

Download citation: RISBibTeXText

Related references

Prevalence of Dirofilaria immitis infection in stray dogs in Saitama, Japan. Japanese Journal of Parasitology 44(4): 325-327, 1995

The prevalence of dog heartworm (Dirofilaria immitis) infection in stray dogs in Okayama, Japan. Kawasaki Medical Journal 18(3/4): 75-83, 1992

Helminth infections of dogs in Shiga, Japan with reference to occult infection of Dirofilaria immitis. Journal of Veterinary Medical Science 53(2): 359-360, 1991

Survey of Dirofilaria immitis infection in stray dogs in Kaohsiung. Journal of the Chinese Society of Veterinary Science 25(3): 241-245, 1999

Four types of occult Dirofilaria immitis infection in dogs. Journal of the American Veterinary Medical Association 180(11): 1323-1326, 1982

Geographic distribution of canine heartworm (Dirofilaria immitis) infection in stray dogs of eastern Romania. Geospatial Health 11(3): 499-499, 2016

A coprological survey of intestinal helminthes in stray dogs captured in osaka prefecture, Japan. Journal of Veterinary Medical Science 75(10): 1409-1411, 2014

Natural infection of Sparganum mansoni in cats captured in Hyogo Prefecture, Japan. Japanese Journal of Parasitology, 353: 153-159, 1986

Heat treatment of serum samples from stray dogs naturally exposed to Dirofilaria immitis and Dirofilaria repens in Romania. Veterinary Parasitology 225: 81-85, 2016

Dogs with patent Dirofilaria immitis infection have higher expression of circulating IL-4, IL-10 and iNOS mRNA than those with occult infection. Veterinary Immunology and Immunopathology 115(1-2): 184-188, 2006

Studies on the prevalence of dirofilaria immitis among dogs and its vector mosquitoes in sasebo city nagasaki prefecture japan. Tropical Medicine 20(3): 143-152, 1978

Prevalence of canine heart filaria, Dirofilaria immitis, in dogs in Okinawa prefecture, Japan, 1991-1992. Japanese Journal of Tropical Medicine and Hygiene 26(3): 161-166, 1998

Helminth parasites of stray dogs and jackals in shahsavar area caspian region iran dirofilaria immitis hookworm dirofilaria repens alaria canis mesocestoides lineatus echinococcus granulosus. Journal of Parasitology 55(2): 372-374, 1969

Dirofilaria immitis in stray dogs from Richmond County, Georgia. Journal of Parasitology 67(5): 746-747, 1981