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At least 19 recordsLinked to original sources
PubMed1996

Treatment of sarcoptic mite infestation and mite hypersensitivity in pigs with injectable doramectin.

Thirty-two pigs were infested experimentally with Sarcoptes scabiei var suis and allocated randomly to a medicated group (injected intramuscularly with 300 micrograms doramectin/kg) or an unmedicated group (injected intramuscularly with 1 ml saline/33 kg). They were observed daily for 15 minutes for signs of pruritus, and the ear lesions were assessed and skin scrapings examined for mites on days 7, 14, 21 and 28 after treatment. In the 16 pigs treated with doramectin the ear lesions resolved completely within 14 days, no mites were recorded on 15 of them on day 7 or on any of them on days 14, 21 and 28; pruritus was greatly reduced from day 7 onwards (range 0 to 0-62 rubbing episodes per pig per day) and papular skin lesions were absent from 15 of the pigs at slaughter on day 28. In comparison, the ear lesions in the 16 unmedicated pigs failed to resolve in 15 of them. Mites were present on 15 of them at different times during the experiment; the numbers of rubbing episodes ranged from 0.88 to 4.65 per pig per day and all the pigs had papular skin lesions at slaughter. In the unmedicated pigs, both the degree of pruritus and the presence and severity of papular skin lesions at slaughter were greater in those with zero or low mite counts than in those with high mite counts.

Animals↗
PubMed1979

Reduction of contact sensitivity reactions to oxazolone in mite-infested mice.

Oxazolone-sensitized mite-infested (SWR-M) and mite-free (SWR-J) mice were challenged with oxazolone on the skin of the neck and shoulder. The migration of radioactively labeled cells to the site of contact sensitivity reaction to oxazolone was significantly less in SWR-M than in SWR-J mice. Serum obtained from SWR-M mice suppressed the extravasation of cells into the skin site of SWR-J mice challenged with oxazolone. The decrease in cellular influx in SWR-M mice occurred in areas of mite infestation (skin of neck and shoulder) as well as in areas not infested with mites (the ears). SWR-M mice also gave evidence of enhanced vascular permeability. A possible role for histamine in the inhibition of contact sensitivity in mite-infested mice is discussed.

Animals↗
PubMed1996

Evaluation of the monitoring of papular dermatitis lesions in slaughtered swine to assess sarcoptic mite infestation.

We investigated the association between the presence of papular dermatitis and sarcoptic mite infestation in pigs slaughtered in southern Minnesota. Following dehairing, a sample of 30 pigs from each of 50 herds was inspected for papular dermatitis lesions. Herds were selected after being categorized into one of five categories according to the prevalence and severity of dermatitis lesions. Herd infestation with sarcoptic mange was determined by recovery of mites from ear scrapings of slaughtered pigs and also by survey of producer opinion. Mite infestation was detected in 28 herds (56%) and 215 of 1500 pigs (14%). Considerable variability in prevalence of positive scrapings, ranging from one pig (3%) to 19 pigs (63%), was found among infested herds. Prevalence of mite infestation was positively associated with severity of papular dermatitis lesions in groups. For individual pigs, estimates of the specificity of localized lesions ranged from 0.70 to 0.90. Generalized lesions appear highly specific (> 0.98) for sarcoptic mite hypersensitivity. Generalized lesions occurred in 36.7% of pigs from herds confirmed to be infested, compared with 0.4% of pigs in herds confirmed free from mange. Our date indicate that monitoring of dermatitis lesions in slaughtered pigs might be a useful test for sarcoptic mange in the Midwest, USA.

Abattoirs↗
PubMed1987

Nosocomial dermatitis and pruritus caused by pigeon mite infestation.

We report an outbreak of pigeon mite infestation involving two patients, two nurses, and one physician on a medical ward in a municipal hospital. The index patient developed a diffuse, pruritic erythematous maculopapular rash on his trunk and extremities. Dermanyssus gallinae, a nonburrowing, blood-sucking avian mite was identified on the patient and his bedding. A second patient who complained of scalp pruritus had mites present on her pillow and bed linen. The intern taking care of both patients, and two nurses who had contact with these patients, had mite infestation. Pigeons roosting on the air conditioners and near the doors connecting the patients' rooms to a sunporch were the source of the mites. The outbreak abated after control measures were instituted that prevented pigeons from roosting on the porch. This outbreak illustrates an unusual cause of nosocomial pruritic dermatitis that may be misdiagnosed as scabies or pediculosis. Physicians and health care personnel working in metropolitan areas are alerted to mites as a cause of pruritic dermatitis that may be chronic, recurrent, or unresponsive to ectoparasiticides.

Adult↗
PubMed1993

Mite infestations other than scabies.

Scabies is clearly the primary medical problem involving mites. However, regionally, there is a broad variety of other dermatoses associated with mite exposure, which in some areas vastly exceed the incidence of scabies. Also, scabies is characterized by a cyclical occurrence that is unusual in other mite infestations and mite-associated dermatoses. Many of these have seasonal or regional characteristics, which will be discussed. The clinical aspects of mite infestation will primarily be dealt with, and the basic anatomy and biology of the mites will be ignored.

Animals↗
PubMed1978

Preliminary observations on northern fowl mite infestations on estrogenized roosters and in relation to initial egg production in hens.

Treatment of normal male Leghorn chickens with doses of estradiol ranging from .1 to 1.0 mg per week caused only a slight increase in resistance to infestation with northern fowl mites. The resistance phenomenon did not increase linearly with estradiol dose. Pullets were initially resistant to mite infestation; however, susceptibility was noted to increase markedly near the time of initial egg-production. These data indicate that sex hormones may be related to mite resistance in chickens, but that estrogen alone is probably not responsible for the difference in mite susceptibility between male and female birds.

Animals↗
PubMed2000

Topical application of garlic reduces northern fowl mite infestation in laying hens.

Northern fowl mites (NFM) are external parasites that can lower egg production and cause anemia and even death in laying hens. An experiment was conducted with New Hampshire Red and Single Comb White Leghorn laying hens. Hens were individually caged and provided a complete laying diet and water ad libitum. Hens were assigned to groups in a way that assured that treatments, within each breed, would be applied to comparable numbers of birds with light and heavy mite infestations. Each hen was sprayed around the vent with either water or 10% garlic juice in water. Spraying continued each week for 3 wk. During the fourth week, each bird was scored for the presence of NFM on its skin and feathers. A small snippet of feathers was removed from below the vent of each hen and placed in a labeled petri dish with a round, white filter paper insert. The NFM content of each dish was scored by two individuals approximately 1 h after sampling. There was no significant difference in the NFM scores for hens based on breed or future treatment. After the birds were treated for 3 wk, there was no significant difference in external NFM scores based on breed. There were significantly fewer NFM on the birds treated with garlic juice compared with controls, based on external and petri dish scoring (P < 0.002 and P < 0.04, respectively). The reduction in external NFM score was also significant (P < 0.004), with controls declining approximately 0.2 units, whereas garlic-treated hens had a 1.8-unit decrease in external NFM score. Topical application of garlic juice may be an effective way to decrease NFM in laying hens.

Administration, Topical↗
PubMed1990

Use of ivermectin for treatment of ear mite infestation in rabbits.

Ivermectin was used to treat ear mite infestation in 480 rabbits in 2 commercial rabbitries. Ivermectin (cattle formulation) injected sc at a dosage of 400 to 440 micrograms/kg of body weight repeated in 18 days appeared to be safe and effective in reducing the prevalence of ear mites in naturally infested rabbits.

Animals↗
PubMed2001

Two types of scab mites infesting man and sheep in North Sinai.

Man and sheep were examined for scab mites infestations. Two types of mites were recovered, Sarcoptes scabiei and Psoroptes ovis. In sheep, 197 out of 939 (20.98%) were infested with S. scabiei (4.05%) and P. ovis (16.93%). The highly infested sheep were recorded in El Hassanah (28.22%) and the least infested ones were in Al Arish (15.85%). In man, 69 out of 790 (8.7%) were infested with S. scabiei (8.1%) and P. ovis (0.63%). The highly infested patients were recorded in El Hassanah (16.2%) followed by Rafah (11.7%), Bir Al-Abd (7.8%), and the least infested one was recorded in Al Arish (4.3%). In man, infestation was seen on one site in 15 patients (21.7%), on two sites in 32 patients (46.4%) and on more than two sites in 22 patients (31.9%). The highly infested site was the upper limbs followed by the lower limbs. Infestation on the face and ear, genital organs and abdomen were also encountered. Infestation on two sites was predominant on the upper and lower limbs followed by the lower limbs and genital organ. The results indicate that transmission of both scab mites, S. scabiei and P. ovis from sheep to man do occur. Infestation with scab mites was high in shepherds (79.7%) than in non shepherd patients (20.3%). However, man was more susceptible to S. scabiei than to P. ovis.

Animals↗
PubMed1968

Mite infestations of man contracted from dogs and cats.

Acarine infestations of the dog and cat are transmissible to man. The relation between age incidence in the host, duration of disease, and circumstances under which the animal is kept are stated. Fifty out of 65 human contacts at risk to 42 infected dogs and cats showed lesions of mite infestation; 48% of these lesions were confined to the arms and torso.It is important to consider animal mite infestation in the differential diagnosis of human pruritic and papular skin disease.

Age Factors↗
PubMed1988

Prevention of mite infestation of bedding by means of an impregnated sheet. A randomized controlled trial.

A randomized controlled trial was conducted to test the effect of a sheet impregnated with benzyl benzoate in preventing mite infestation of new bedding. Impregnated sheets were placed on the mattresses of 17 subjects, while 19 subjects received placebo sheets. Over the following 2 years infestation occurred more commonly, and tended to be heavier, in the beds with inactive sheets than in those with impregnated sheets; among the 27 beds with three items of new bedding sampled on four occasions, a mite count of five or more occurred significantly more often where the sheet was inactive than where it was active (11 of 13 and 5 of 14 respectively). The application of a sheet impregnated with benzyl benzoate appears to prevent mite infestation and may be useful for patients with mite allergy who obtain new bedding as part of a mite-avoidance regimen.

Asthma↗
PubMed1998

Focal epidemic of sarcoptid (Acarina: Sarcoptidae) mite infestation in an insular population of white-footed mice.

The abrupt and focal emergence of an infestation of sarcoptid mites was documented during long-term studies of populations of the white-footed mouse, Peromyscus leucopus (Rafinesque), on Nantucket Island, MA. From 1985 to 1996, > 1,000 trap nights were recorded each year in 2 permanently situated sampling grids that were sampled monthly from April through November. In April 1995, prominent excrescences were first noted on the pinnae of mice trapped solely from 1 of the 2 sites. Histopathology of the lesions suggested infestation with Notoedres spp. Of 140 unique captures of mice during 1995-1997, 77% were infested as determined by the presence or absence of macroscopic ear lesions. Both sexes were likely to be infested, but juvenile mice were twice as likely to be noninfested. No lesions were noted in 103 mice concurrently sampled from a grid situated 15 km away, nor in mice from other sites in coastal New England. The origin of this epidemic remains obscure. This unusual infestation exemplifies the emergence of zoonotic infections, but at the level of an enzootic cycle.

Animals↗
PubMedDate not supplied

Assessment and control of house dust mite infestation.

Most allergens of the house dust mite (Dermatophagoides pteronyssinus and Dermatophagoides farinae) are carried by the mite excreta rather than by the mites themselves. A method of assessing the concentration of mite excreta in dust (the Acarex test) is described. The effects of Acarosan products, whose active ingredient is solidified benzyl benzoate, on mites and mite excreta were evaluated. Over a period of three years, three to four applications of Acarosan effectively destroyed mites in carpets, upholstery, and mattresses, as assessed by the measure of mite excreta and a count of live mites.

Allergens↗
PubMed1992

Louse and mite infestation in domestic animals in northern Nigeria.

Records of domestic animals brought to the Veterinary Entomology Laboratory for diagnosis of suspected lice and mite infestation over a 10 year period were analysed. From a total of 794 suspected cases, 137 (17.3%) and 247 (31.1%) were positive for lice and mange mites respectively. The most common lice species recorded were Linognathus vituli (66.7%) on cattle, L. ovillus (83.3%) on sheep, Haematopinus suis (100%) on pigs and Menacanthus stramineus (54.5%) on poultry. Other lice species recorded included Haematopinus bovis and Solenopotes capillatus on cattle, Damalinia ovis on sheep, Linognathus stenopsis and Menacanthus stramineus on goats, Goniocotes sp. on a horse, Linognathus setosus and Menacanthus stramineus on dogs, Goniodes gigas, Lipeurus caponis, Menopon gallinae and Chelopistes meleagrides on poultry. The most common mite species were Demodex folliculorum on cattle (96.9%) and on dogs (80.8%), Sarcoptes scabiei on pigs (100%) and Notoedres cati (80.3%) on rabbits. Other mite species included Psoroptes communis, Cheyletiella parasitivorax, Ornithonyssus gallinae and Dermanyssus gallinae.

Animals↗
PubMed1995

Mites infesting commensal rodents in Shebin El Kom, Menoufia G., Egypt.

Rodent populations markedly increased in many Egyptian Governorates particularly commensal ones which live in close association with man and his domestic animals. In this paper, commensal rodents; M. musculus R. r. alexandrinus, and R. norvegicus were examined for the mites infesting them. Four species of mites were recovered; Ornithonyssus bacoti; Laelaps nuttalli, Dermanyssus gallinae and Allodermanyssus sanguineus. The medical and economic importance was discussed. It was concluded that mites and their environmental problem should be tackled.

Animals↗
PubMed2003

Factors affecting the prevalence of mange-mite infestations in stray dogs of Yucatán, Mexico.

The aim of the present study was to determine the factors affecting the prevalence of mange-mite infestations in stray dogs of Yucatán, Mexico. The study was carried out in 200 stray dogs of Mérida capital city of Yucatán, Mexico. Four samples (head, thoracic-abdominal area, extremities and ear) were taken from each animal by skin scraping and examined microscopically in 10% KOH solution to detect the presence of mites. Mites were also collected from the external ear canal of dogs using cotton-tipped swabs. The prevalence of different mite species was calculated. A primary screening was performed using 2xK contingency tables of exposure variables. All variables with P< or =0.20 were analyzed by a logistic-binomial regression. The overall prevalence was 34%. Demodex canis (23.0%) was the most frequent mite, followed by Sarcoptes scabei var. canis (7.0%) and Otodectes cynotis (3.5%). The following factors were found: body condition (bad, OR: 5.35, CI 95%: 1.66-17.3; regular, OR: 3.72, CI 95%: 1.39-9.99) and the presence of macroscopic lesions of dermatosis (OR: 42.80, CI 95%: 13.65-134.24).

Age Factors↗