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permethrin for head lice. 19863528785
comparison of pediculicidal and ovicidal effects of two pyrethrin-piperonyl-butoxide agents.a pyrethrin-piperonyl-butoxide shampoo was compared with a similarly formulated lotion for their pediculicidal and ovicidal effects against head lice. forty children with active pediculus humanus capitis infestation were randomly assigned to one of two groups for a single treatment with either the shampoo or the lotion. an average of ten nits were taken from each patient both before and after treatment. these eggs were incubated for 14 days, the resulting lice counted, and their conditions noted ...19873607818
pilot study of the prevalence of head lice infestation in a population of saudi arabian children.the prevalence of infestation with the head louse, pediculus capitis, was assessed among the child population, from birth to 10 years old inclusive, of the rapidly expanding saudi arabian city of jeddah. over a period of two months, 300 consecutive children attending the general practitioner for any reason were examined specifically to identify those infested with head lice: 37 cases of active infestation were found, which is an overall prevalence of 12%. an interesting distribution, however, wa ...19873609553
clinical evaluation of pediculicidal and ovicidal efficacy of two pyrethrin-piperonyl-butoxide formulations.the pediculicidal and ovicidal efficacy of two pyrethrin-piperonyl-butoxide agents was evaluated in 40 children infested with head lice. both commercial products, a lotion and a shampoo, had similar formulations. specifically, the shampoo vehicle was tested to determine whether its surface-tension-lowering action made it more effective as an ovicidal agent than the lotion. results of the study indicate that the shampoo is 49% more effective than the lotion as an ovicide.19873664551
a study of head lice among primary schoolchildren in kenya.of 1270 schoolchildren (651 girls and 619 boys) from 33 urban and rural primary schools in different regions of kenya who were examined for head lice, 17.1% were infested (8% with living lice or nits, 9.1% with dead nits). the over-all difference between infestation rates in urban and rural schools was not significant, but there was considerable variation in the five different regions selected. infestation was not sex-related. infestation rates tended to be higher in older children and in childr ...19863726995
[board of health. new and revised information on head lice in schools]. 19853849119
attitude to head lice--a more powerful force than insecticides. 19853921715
[micromorphology of the malpighian tubules in the louse pediculus humanus corporis (anoplura)].the ultrastructure of the malpighian tubes in human louse pediculus humanus corporis has been studied. the cells of the malpighian tubules have the uniform structure: the apical surface is covered with microvilli, the basal plasmatic membrana forms relatively small invaginations. the microvilli are most developed in cells of the proximal department of the malpighian tubules. microvilli of the apical surface of the cells do not contain mitochondria which are localized mainly in supranuclear part ...19853986247
[the efficacy of malathion against head lice]. 19854000292
pediculosis capitis (head lice). infectious diseases and immunization committee, canadian paediatric society. 19854042056
human lice: some basic facts and misconceptions. 19854052692
prevalence of head louse (pediculus capitis) infestation among inhabitants of the niger delta.the prevalence of head louse pediculus capitis deg. among inhabitants of the niger delta was investigated. 5.7% of 7,360 subjects harboured head lice. the infestation was highest among the 6-13 year age group (13.5%) and decreased progressively with increase in age of the subjects. overall, more female subjects than male subjects harboured lice. the present study establishes the need for anti-louse campaign in the study area to reduce human sufferings caused by head louse particularly among chil ...19854081545
[development of resistance to ddt and lindane in the louse, pediculus humanus humanus l]. 19724113661
further notes on the susceptibility of body lice, pediculus humanus humanus to insecticides in egypt. 19714114427
[the infestation by pediculus humanus capitis in santiago, chile (author's transl)]. 19734131725
[the behavior of rickettsia montana and r. canada in body lice]. 19734147870
[differentiation of sensitivity of pediculus humanus humanus l. to chloroganic insecticides, in relation to physiological and environmental conditions. i. influence of p,p ddt and gamma hexachlorocyclohexane on sensitivity in pediculus humanus in relation to sex]. 19664161711
[differentiation of the sensitivity of pediculus humanus humanus l. to organic chlorine insecticides with special regard to physiological and environmental conditions. ii. influence of physiological conditions (age, satiety) on the sensitivity of the cause on p,p'ddt and gamma-benzene hexachloride]. 19664161846
[differentiation of sensitivity of pediculus humanus humanus l. to the organochlorine insecticides in relation to physiological and environmental conditions. 3. effects of environmental conditions (temperature, humidity) and density of population on the sensitivity of louse to p,p'-ddt and gamma hch]. 19664163717
[influence of seasonal changes in sensitivity of lice pediculus humanus humanus l. to p,p'-ddt and gamma hch]. 19684173849
antibody and antibiotic action on rickettsia prowazeki in body lice across the host-vector interface, with observations on strain virulence and retrieval mechanisms. 19734200566
[morphological properties of rickettsia prowazekii cultivated for a long period in body lice]. 19744209860
ultrastructural studies of rickettsia prowazeki from louse midgut cells to feces: search for "dormant" forms.an electron microscope study of infected human louse gut cells and feces was made to determine whether a valid correlation exists between the increased resistance of rickettsia prowazeki (in the louse feces) to adverse environmental influences and changes in the organism which might be reflected in its ultrastructure. upon fine structural examination of this intracellular parasite as it passed from the louse midgut cell to the feces, it was apparent that no such morphological changes had occurre ...19744210339
effect of oxytetracycline on the growth curve of rickettsia prowazekii in the organism of the body louse (pediculus humanus corporis l.) and ornithodoros moubata tick (murray). 19744216445
experimental louse-borne relapsing fever in the grivet monkey, cercopithecus aethiops. iii. crisis following therapy.eight grivet monkeys infected with borrelia recurrentis received tetracycline (12.5mg/kg body weight) on the 3rd or 4th day of spirochetemia. leukopenia, fever, hyperpnea, and tachycardia developed within 2 hours as spirochete counts fell to undetectable levels. these events closely simulated the crisis in human louse-borne relapsing fever in both timing and extent.19744217572
letter: outbreak of head lice in michigan misdiagnosed. in disagreement. 19744414326
the effect of some antibiotics on rickettsia prowazeki and yersinia pseudotuberculosis in body louse pediculus humanus humanus l. 19724634101
experiments to transmit rickettsia montana and r. canada to body lice. 19724660756
resistance to malathion in a strain of body lice from burundi. 19734690250
an improved method for rearing head lice. 19744828343
outbreak of head lice in michigan misdiagnosed. 19744835145
first report of resistance of human body lice to malathion. 19725048872
a novel apparatus for determining odour-preference in head lice. 19715097848
[insecticidal properties of dilor against pediculus humanus corporis]. 19715107288
a simple fumigation method for disinfecting clothing or bedding containing body lice. 19665219020
second survey of insecticid-resistance in body-lice, 1958-63.between 1953 and 1956 the world health organization carried out a global survey of the susceptibility of body-lice to insecticides. a second survey was organized in 1958; this paper summarizes the results of susceptibility tests done in 22 countries over the period 1958-63.resistance to ddt has been found in a number of countries. the lc(100) for resistant body-lice has been found to be over 5% ddt, the lc(100) for hybrids to be between 1% and 5% ddt; and the lc(50) for susceptible genotypes has ...19655294995
inheritance of ddt-resistance in body-lice.the interpretation of surveys of ddt-resistance in body-lice is handicapped by the fact that the genetics of this form of resistance have not been studied. this paper reports on a preliminary investigation on normal and resistant strains of lice, f(1) and f(2) hybrids of a mass cross and f(1) x r hybrids exposed to ddt dust and ddt-impregnated paper of various concentrations. the results were consistent with inheritance by a single gene pair (or possibly a small number of genes). the f(1) hybrid ...19675299674
[new aspects in electron microscopy by scanning in dermatology. cutaneous parasitology: pediculus humanus capitis and phtirus inguinalis]. 19695384198
a problem in the diagnosis of head lice. 19695406676
human louse infestation. 19705414899
further sleeve tests of new powders for control of body lice. 19705431679
[circumscribing alopecia caused by head lice]. 19705509162
toxicological and entomological field evaluation of the effects of mobam powder against body lice (anoplura: pediculidae). 19715555011
sleeve tests of insecticides for control of body lice in 1969-70. 19715558290
[resistance of pediculus humanus to toxic action of pyrazolidine preparations not connected with symbionts or an infection factor and inherited in the maternal line]. 19715573207
[on the possibility of transmission of tick relapsing fever by lice. 3. further data on the fate of tick relapsing fever spirochaetae in the organism of body lice]. 19675609982
[a comparative study of multiplication of borrelia sogdianae in the hemolymph of a "rabbit" race and common body lice. iv]. 19675612811
current status of the susceptibility of some egyptian body lice to ddt and gamma-bhc. 19675615560
[5 years of experience in keeping pediculus humanus colonies in the laboratory]. 19675618958
gas chromatographic determination of diethyl fumarate in malathion extracts and preparations used for control of body lice. 19685642112
a note on the relationship between feeding and insemination in pediculus humanus. 19685658612
[pediculus humanus humanus (linné 1758) resistance to d. d. t. in various localities of the ecuadorian andes]. 19685712757
[possibilities of transmission of tick relapsing fever by lice. v. the dynamics of bor. sogdianae multiplication in hemolymph of body lice]. 19685734369
sleeve tests of insecticidal powders for control of body lice. 19695763286
human louse infestation. treatment with carbacide. 19695822363
[on the possibility of transmission of tick relapsing fever by lice. ii. the fate of spirochaetae of tick relapsing fever in the organism of body lice in the first day after infective feeding]. 19655876193
[new method for the destruction of pediculus humanus. study on the ingestion of phenylbutazone in humans and rabbits]. 19655889403
control of an outbreak of gamma-bhc-resistant sheep body lice in the north of england with the phosphoric ester carbophenothion. 19666008204
resistance of body lice to carbaryl. 19676042065
evidence of rickettsia prowazekii infections in the united states.from january 1976 through january 1979 serum specimens from 1,575 individuals were received at the center for disease control and tested for antibodies to rickettsiae. of these, sera from eight persons gave serological results indicative of recent infections with epidemic typhus rickettsiae (rickettsia prowazekii). five of the persons were from georgia, and one each was from tennessee, pennsylvania and massachusetts. the illnesses occurred during the winter, chiefly in persons living in a rural ...19806154428
treatment of head lice. 19806157083
pyriderm shampoo in the treatment of pediculosis capitis.112 patients with head lice were treated with a shampoo containing pyrethrins. all were treated twice with an interval of one week. at examination immediately before the second treatment, 6 patients had small, newly hatched lice, and one patient had both small and mature lice--probably due to reinfestation. this patient was lice-free after the third treatment, the other patients after the second treatment. it is concluded that pyrethrins are highly effective against head lice and have the advant ...19816164232
treatment of scabies and pediculosis with lindane preparations: an evaluation.risks and benefits involved in the use of lindane preparations for the treatment of scabies and head louse infestations are evaluated. although lindane per si is moderately toxic, capable of inducing neurotoxic and hemotoxic effects, there is little evidence that the preparations used in the treatment of scabies and pediculosis give rise to toxic symptoms when applied according to directions. current evidence does not support the view that lindane is intrinsically carcinogenic, although very hig ...19816170656
patient education. head lice. 19836187320
comparative trial of treatment with prioderm lotion and kwellada shampoo in children with head lice.the safety and efficacy of treatment with a new pediculicide lotion, prioderm (0.5% malathion in isopropanol), were compared with those of treatment with kwellada (1% lindane) shampoo in a randomized trial of children with head lice. the children's scalps were examined for live lice immediately, 7 days and 4 to 6 weeks following treatment. to determine the in-vitro ovicidal effect of treatment, samples of hair with nits were removed before and immediately following treatment; the subsequent rate ...19846198057
the story of lindane resistance and head lice. 19836198299
pediculosis and the pediatrician.head lice commonly evoke feelings of disgust, revulsion, anger, and shame among parents and patients. there should, however, be no great cause for such alarm if a physician suspects pediculosis capitis. the recent introduction of several new pediculicidal drugs now allows a choice among four distinct therapeutic agents, which should substantially improve control of isolated cases and epidemics. physicians must be aware that consumer groups are pressing public health authorities and drug manufact ...19846209693
head-lice infestations and their treatment.head-lice infestations periodically cause disruption at schools and crèches. the life cycle of the insect and the treatment of infestation are discussed. treatment is usually relatively simple and effective, relying mainly on the use of insecticides such as gamma benzene hexachloride, malathion and pyrethrins. appropriate therapy for problem areas, for example the eyebrows, is also described.19846209812
efficacy of malathion and synergised bioallethrine in the treatment of head louse, pediculus humanus ssp. capitis, infestations. 19846399181
comparative study of ddt, carbaryl (sevin) and actellic (pirimiphos-methyl) in the treatment of pediculus humanus capitis infestation. 19836405446
observation of symbiote migration in human body lice with scanning and transmission electron microscopy.bacterial symbiotes in the human body louse pediculus humanus migrate from the mycetome to the lateral oviducts during the adult molt. their migration was first described by ries (e. ries. 1931. z. morphol. oekol. tiere, 20:233-367.), who examined sectioned specimens with light microscopy. the present study is a more detailed investigation which involves the use of scanning and transmission electron micrographs. the results of our studies confirm ries' observations. micrographs are presented of ...19836413046
an attempt to infect human body lice, pediculus humanus var corporis on a mild case of murine typhus. 19846432477
[spread of head lice infestation in kassel schools (author's transl)]. 19806448372
head lice infestation and pedodontic practice. 19816456283
[an allergic reaction from contact with pediculus humanus capitis (head lice)]. 19846493379
pediculosis capitis among rural and urban schoolchildren in nigeria.the prevalence of head lice (pediculus humanus capitis) was investigated among urban and rural schoolchildren in ibadan city and three surrounding villages all in southern nigeria. 106 (5.7%) of 1860 urban schoolchildren examined were infested compared with only seven (1.5%) of 473 children from rural schools (p less than 0.05). pediculosis appears to be an urban problem which may be associated with overcrowding. however, the intensity of head louse infestation was low among the urban schoolchil ...19846506149
[head lice in school children in jerusalem]. 19846510807
[pediculus humanus capitis: a municipal antiparasite campaign among school children].the results of a prevalence survey of lice and a control program in the primary schools of a city in the barcelona metropolitan area (spain) are presented. crude prevalence was 6.10%, standard deviation 2.66. in another survey three months later, prevalence was 1.92%. differences among school grades had fallen. higher infestation levels were found between third and sixth grades.19846529030
the treatment and eradication of sheep lice and ked with cyhalothrin--a new synthetic pyrethroid.a new synthetic pyrethroid, cyhalothrin, has been evaluated as both a sheep dip and a jetting fluid for the control of body lice (damalinia ovis), face lice (linognathus ovillus), foot lice (linognathus pedalis) and the sheep ked (melophagus ovinus). a dip wash concentration of 1.25 ppm cyhalothrin eradicated d. ovis from sheep. a jetting fluid at a concentration of 20 ppm also eradicated d. ovis. in the field cyhalothrin was evaluated at 20 ppm as a dip wash and at 50 ppm as a jetting fluid. th ...19846534357
head lice. pediatric social disease. 19836555008
[an annoying nuisance--head lice]. 19846563495
head lice--a different future. 19846567766
[head lice. control of lice simplified with a new spray medication]. 19846570615
[head lice: treatment and prevention]. 19836629170
[head lice. biology, medical significance and control]. 19836637017
[treatment of head lice with rinsoderm shampoo. results from a multicenter study]. 19836648932
epidemiology and control of human head louse in malaysia.a survey of 4.112 primary school children living in and around kuala lumpur, malaysia, revealed that 12.9% of the children were infested with pediculus humanus capitis. indians (28.3%) and malays (18.9%) have a higher prevalence than chinese (4.6%). the higher prevalence among indians and malays correlates well with their lower socio-economic status in the community; long hair also contributes to the higher rates of pediculosis among them. the prevalence rate was found to be related to socio-eco ...19836670116
susceptibility to ddt and some other insecticides of head lice (pediculus capitis de geer) in czechoslovakia.for testing the susceptibility of the head louse to insecticides impregnated bunches of polyamide fibres, whose diameter resembled that of human hair (0.1 mm) were used. in this manner a low mortality of control lice collected from infected persons was obtained (2.9% after 16 hours of exposure). even after 25 years of ddt use no apparent resistance could be demonstrated in 25 tested louse populations and cross resistance to permethrin in 7 tested populations. the diagnostic concentration for res ...19846745798
novel phenomena arising from the use of acetylcholinesterase inhibiting insecticides against human head lice. 19816783365
clinical and laboratory trial employing carbaryl against the human head-louse, pediculus humanus capitis (de geer). 19816804141
malathion for treatment of head lice. 19836828024
[revised information from health administration: head lice in children occurs with continued frequency]. 19826923649
[head lice an increasing problem: work in vain when not all take co-responsibility]. 19826926268
malathion for treatment of pediculus humanus var capitis infestation.one hundred fifteen subjects took part in a double-blind study comparing the efficacy and safety of 0.5% malathion lotion (prioderm lotion) and the alcoholic vehicle of the lotion as pediculicides in the treatment of head lice. the subjects, with a mean age of 9 years, had long-standing lice infestations and at least 20 viable ova. the subjects were treated with the test preparation, which was allowed to remain on the hair for 12 hours. ovicidal and pediculicidal efficacy for the malathion lotio ...19827043013
resistance of head louse (pediculus humanus capitis de geer) to ddt in malaysia.a survey of 308,101 schoolchildren conducted in 10 of 11 states in peninsular malaysia revealed that 10.7% have pediculus humanus capitis infestation. the results of treatment with 1%, 2% and 5% ddt in coconut oil in 374 cases reveal cure rates of 3.5%, 15.8% and 51.3%, respectively, suggesting that the head louse has probably developed resistance to this insecticide in malaysia.19827080159
fatal paraquat poisonings after skin absorption.this paper reports five cases of fatal paraquat poisoning after skin absorption in adult papua new guinea men. three incidents followed occupational accidents, one victim used paraquat concentrate to treat a scabies infestation, and one used it to treat head lice. all had marked blistering and excoriation, and all died from respiratory failure. in developing countries, reporting on poisoning incidents is very limited, and treatment of paraquat poisoning is, for practical purposes, nonexistent. a ...19827099093
the incidence of the head louse (pediculus humanus capitis) among pupils of two schools in accra.of 319 pupils examined by visual inspection for head lice in two large schools of contrasting socioeconomic environments in accra, ghana, 158 were found to be infected, with infection rates being higher in the school of lower socio-economic status. younger pupils (7 years) had significantly lower infection rates than older one (11 years). hair plaiting, communal use of toilet facilities and crowding have been found to be involved in the epidemiology of the head louse. a curious discrepancy was f ...19827112661
a new treatment of pthiriasis palpebrarum.treatment of phthiriasis palebrarum so far is unsatisfactory and prolonged. it was an accidental finding that led us to try various strengths of fluorescein on head lice. it was seen from our study that 20% fluorescein resulted in the lice' instantaneous death. this percentage was used in all our subsequent cases of phthiriasis with excellent results. a new method for the treatment of phthiriasis palpebrarum from the eyelash by a single application of 20% fluorescein is described. this method re ...19827114672
[head lice problems. i. taxonomic position of pediculus capitis].the recognition of the head louse and the body louse being two different species is not quite new. this view is also supported by the author as can be seen in several publications. it is based on the biological species concept of the so-called new systematics. but even quite a few contributors doing research in the field of lice still ignore this concept. therefore, the author emphasizes all "biological" species criteria referring to modern epidemiological research done in the last decades. cons ...19827125284
epidemiology of pediculus humanus capitis infestation in malaysian school children.a survey of 308,101 primary school children in peninsular malaysia conducted in 1979 by the school health services, ministry of health, malaysia, revealed that 10.7% of children were infested with pediculus humanus capitis. the prevalence rate was higher in the economically less advanced states of terenganu (34%), kelantan (23%), and perlis (21%) than in the other states (4-13%). of 14,233 school children examined in the state of melaka, 26% of indians, 18.7% of malays, 6.1% of europeans, and 0. ...19817258487
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