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At least 1,045 records · Page 58Linked to original sources
PubMed1981

A common-source outbreaks of ornithosis in veterinary surgeons.

Presumed or confirmed ornithosis developed in 15 of 46 veterinary surgeons within 3 weeks of their attending a training course on the supervision of poultry processing plants. A duck processing plant was the probable source of infection. The attack rate in those visiting this plant was 44% (15/34) and the rate in those who had close contact with duck feathers was 1.7 times the rate in the remainder of the group who visited the plant. The incubation period ranged from 6 to 20 days. This is the second outbreak of the duck-associated ornithosis to be recognised in the U.K.

Animals↗
PubMed1981

Ornithosis in poultry workers.

An outbreak of ornithosis in duck workers in the winter of 1979 and spring of 1980 was discovered by the investigation of a cluster of cases in Norfolk. A serological survey showed that 61% of duck workers but only 23% of control poultry workers had chlamydia group antibody titres of greater than or equal to 1:8. Altogether 9% of duck workers in the survey had antibody titres greater than or equal to 1:32 and a clinical illness suggestive of ornithosis. The proportions of seropositive tests and clinical attack rates were highest in workers eviscerating ducks and lowest in farm workers. It is suggested that a clinical history of contact with poultry should be considered relevant in the diagnosis of ornithosis and that clinicians caring for poultry workers should consider the possibility of ornithosis as an occupational disease.

Adult↗
PubMed1996

Influence and power of the media.

People tend to get most of their information beyond work and family horizons from the press, radio, and television. So, do they really believe media stories that suggest, for example, there is no link between HIV and AIDS? This is unlikely, but there is a curious paradox--namely, that the same time, people to varying degrees are open minded about such stories as unidentified flying objects, astrology, reincarnation, and alien abduction. Yet, people are discerning and seem able to spot the dangerous rubbish, happy to be entertained and unlikely to be misled by the things that will really alter their lives.

Acquired Immunodeficiency Syndrome↗
PubMed1998

Cytokines and the protective host immune response to Chlamydia psittaci.

The immunobiology of enzootic abortion of ewes (EAE) is incompletely understood. The causative agent is Chlamydia psittaci, which infects many ruminant species and has zoonotic potential. The organism can survive in the ovine host for many months without causing clinical symptoms but does not generate a sterile immunity during this time. It has been postulated that the organism persists in the host entering at a latent phase, possibly mediated by host cytokine production. The effects of cytokines on chlamydial multiplication vary between host species, between different cell types within those species and also vary between chlamydial species and strains. The multiplication of the EAE strain of C. psittaci in ovine ST-6 cells can be restricted by interferon-gamma (IFN-gamma) but not with comparable concentrations of IFN-alpha. Altering the nutrient composition of the cultures by addition of tryptophan partially reverses the antichlamydial effects of the IFN-gamma. This offers a potential mechanism by which C. psittaci can persist in sheep. The implications of these observations for the pathogenesis of EAE are discussed.

Abortion, Veterinary↗
PubMed2000

Selenium and vitamin E effect on antibody production of sheep vaccinated against enzootic abortion (Chlamydia psittaci).

The effect of selenium (Se) and vitamin E (vit E) on antibody production of sheep vaccinated against Chlamydia psittaci (ovis) was investigated. Thirty-two sheep, one year old, seronegative to Chlamydia infection, vaccinated against enterotoxemia and dewormed were used. Injectable sodium selenite (0.1 mg/kg b.w.) was given twice to animals of the first group (gSe), with a three week interval. The sheep of the second group (gE) received 1 g vit E each orally, six times at weekly intervals. The animals of the third group (gSeE) were given Se and vit E in doses and routes of administration as in gSe and gE. The animals of the fourth group served as controls (gC) and injected normal saline. The first vaccination was made at the time that the second Se injection was given. Revaccination was made two weeks later. The experiment lasted 29 weeks. The results indicated that Se alone led to a significant increase of Chlamydia antibody response (P < 0.05), but not when it was given in combination with vit E. Animals that received vit E (gE) had much lower titres, just above of those of the controls.

Abortion, Veterinary↗