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Biomedical subjects

G L Hoff

Publications and source records attributed to G L Hoff.

At least 37 records · Page 2Linked to original sources
PubMed1985

Foodborne streptococcal pharyngitis Kansas City, Missouri.

A foodborne outbreak of streptococcal pharyngitis occurred in association with a meeting of regional blood banking personnel held at a hotel in Kansas City, Missouri, on May 31-June 1, 1984. The incriminated meal was a salad buffet luncheon served on May 31. Of 106 persons identified as eating the luncheon, 60 (56.6 per cent) became ill. The most probable source of infection was an assortment of mousse desserts (p = 0.0532).

Disease Outbreaks↗
PubMed1984

Fibromuscular hyperplasia of the brachial artery--failure of calcium antagonist therapy.

Fibromuscular dysplasia (FMD) of the arteries of the extremities has been reported few times in the literature. The clinical significance of FMD relates to the consequences of interruption of arterial blood to the tissues. We report here the second case of FMD of the brachial artery and discuss the failure of the calcium channel blocker, nifedipine, in the therapy of this disorder. A review of the pertinent literature is included.

Adult↗
PubMed1983

Persistence of rabies antibody in free-ranging raccoons.

The immune status of a wildlife population to rabies virus probably influences the occurrences of epizootics among that species in a given geographical area. This is not to say that enzootic transmission of the virus will not occur, but rather that attainment of epizootic levels may be hampered through herd immunity. After an epizootic of rabies in a raccoon population in the Fall of 1970, a serologic surveillance program was initiated from November 1970 through August 1974. The surveillance provided the opportunity to determine the persistence of antibody in individual animals as well as to compare the sensitivity of intracerebral mouse inoculation and the RFFIT. The average point prevalence of neutralizing antibody was 20.9% (range, 15.5% [1970] to 25.0% [1974]). Fifty-one (18%) of the 476 raccoons monitored during the study period were trapped more than once. The testing of sequential serum samples from individual seropositive raccoons indicated that serum neutralizing antibody can persist for at least 37 months. It cannot be stated with certainty that these antibody titers resulted from a single exposure to rabies virus and were not boosted by further experience with the virus. Serial serology tests on three young raccoons (less than 15, 30, and 52 weeks of age) suggest that endemic rabies virus was circulating in or near the study area between June 1972 and February 1974. Thirty-six raccoons trapped in November 1970 were shipped to the Centers for Disease Control, Lawrenceville, Ga, where they were held in captivity for observations and serologic monitoring.(ABSTRACT TRUNCATED AT 250 WORDS)

Animals↗
PubMed1981

Public health and gerbils: microbial evaluation.

Fifty Mongolian gerbils (Meriones unguiculatus) were purchased from 25 retail outlets. The aerobic oral and fecal bacterial flora as well as the dermatophyte flora were examined for potential human pathogens. The study revealed that gerbils purchased from retail outlets constituted no public health threat in terms of disease caused by these organisms. Among the retail outlets there were no differences in findings between gerbils that originated with commercial breeders or those supplied by customers of the retail outlet.

Animals↗
PubMed1979

Pulmonary histoplasmosis associated with exploration of a bat cave.

Approximately 14 days after exploring a limestone cave in northcentral Florida in February 1973, an 18-year-old female developed a respiratory illness with pronounced shortness of breath and cyanosis. The following day, an 18-year-old male presented to the hospital with similar complaints. The association of illness with their recent caving experience prompted further epidemiologic investigation. Twenty-nine members of a church-sponsored youth group explored the implicated cave. Twenty-three of them later became ill with complaints of cough, afternoon fever and sweats, chest discomfort, and dyspnea on exertion. Histoplasmin skin tests were positive in 18 of 24 individuals tested. Serum for complement fixation (CF) was positive in 12 of 26. Testing of area residents revealed a low incidence of skin test and CF positivity (7% and 0%, respectively). That spelunkers are at risk of acquiring pulmonary histoplasmosis has been noted previously; in Florida this has been related to the exploration of caves infested with bats. This is the largest reported outbreak of acute pulmonary histoplasmosis that has been associated with spelunking and further points out that only those individuals who enter the cave are at risk of acquiring the disease, and not those who reside in the surrounding area.

Adolescent↗
PubMed1978

Occurrence and distribution of western equine encephalomyelitis in Florida.

Research and surveillance programs relating to the occurrence and distribution of western equine encephalomyelitis virus in Florida, conducted between 1955 and 1976, suggest that the virus is (1) an endemic arbordae, (2) transmitted in a continuous cycle throughout the year by Culiseta melanura mosquitoes, and (3) restricted to fresh water swamps and waterways in central, north, and northwest Florida.

Animals↗
PubMed1977

Trends of brucellosis in Florida. An epidemiologic review.

Human brucellosis in Florida is documented for the 47-year period 1928-1975. Of the 936 cases reported in 1930-1975, more than half (505) occurred in the decade 1940-1949. The incidence declined rapidly to an average rate of five cases per year, although there was an increase in 1974 and 1975. The analysis is mainly concerned with the years 1961-1975, since more complete epidemiologic data are available for this period. Cases occurred throughout the year, with the highest incidence being between May and August. White males in the 25-35 and 35-44 deciles were most affected. Of occupations identified between 1963-1975, 44% were related to the livestock-producing industry, 16% to the meat processing industry and 28% to hunters, housewives, students and children. Twelve per cent of the cases did not fall in any of these categories. Cattle were the most probable source of human infection in the livestock industry, and swine were associated with most non-industry cases. In 1963-1975, B. suis was isolated from 10 cases and B. canis from one case; one other isolate was not identified beyond genus. Of the 27 human cases recorded during 1974-1975, 15 (56%) involved swine contact (five livestock industry, four consumers and six hunters), 11 (41%) involved cattle contact (all from the livestock and meat packing industries), and one involved contact (with both cattle and swine (livestock industry). Human cases contracted from swine were scattered statewide, whereas cases associated with cattle only occurred in counties that had )( high densities of cattle and 2) modified-certified ratings in the Brucellosis Eradication Program.

Adult↗