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Biomedical subjects

B J Johnson

Publications and source records attributed to B J Johnson.

152 records · Page 9Linked to original sources
PubMedDate not supplied

A cluster of tick-borne infections: association with military training and asymptomatic infections due to Rickettsia rickettsii.

During the spring of 1989, 86 members of a military unit from the state of Maryland, USA, participated in two-week-long training manoeuvres in the states of Arkansas (location FC) and Virginia (location FAPH). Acute febrile illnesses due to infections with two tick-borne pathogens, Rickettsia rickettsii and Ehrlichia sp., were confirmed serologically in 2 initial cases who were admitted to the hospital. A seroepidemiological investigation among unit members found an additional 17 of 109 individuals (16%) with elevated post-exposure indirect immunofluorescent antibody (IFA) titres to R. rickettsii (16 cases) and/or E. canis (2 cases). The seropositivity rate of personnel who trained at FC was 38% (15 of 40), compared to only 13% (4 of 31) and 8% (3 of 38) of personnel who trained at FAPH or who did not train in the field, respectively (P < 0.001). Seropositivity was associated with symptoms suggestive of a tick-borne illness. Only 4 (22%) and 6 (33%) of the 18 personnel seropositive for R. rickettsii reported an erythematous or petechial type of rash or a febrile illness, respectively, within 4 weeks of exposure; 5 of 18 (28%) personnel infected with R. rickettsii reported no symptoms and only 8 of 18 (44%) received medical treatment. Mild infections with R. rickettsii, or a closely related spotted fever group agent, may have accounted for the high infection rate experienced by this group.

Antibodies, Bacterial↗
PubMedDate not supplied

Nonpunitive discipline. A method of reducing absenteeism.

Absenteeism affects healthcare by reducing the work force during a time of crisis in availability of skilled nursing care providers. An absent worker is a loss to the employer both financially and emotionally. By understanding and using the concept of nonpunitive discipline, nurse administrators can effectively reduce absenteeism and increase the availability of professional nursing resources.

Absenteeism↗
PubMedDate not supplied

Assessment of the excess risk of Salmonella dublin infection associated with the use of certified raw milk.

The risk of serious illness attributable to infection with Salmonella dublin associated with the consumption of certified raw milk in California was evaluated. Data were derived from case reports of S. dublin isolations from persons in the State of California during the period 1980-83 and from production figures for raw milk from the major supplier. It is estimated that more than one-third of reported S. dublin infections in California in the first 4 years of this decade were attributable to raw milk consumption. Among raw milk consumers, it is estimated that more than 95 percent of reported S. dublin infections were acquired from raw milk; this proportion corresponds to a rate of reported S. dublin infections acquired from raw milk in the range of 8 to 35 cases per 100,000 users per year. It appears that immunocompromised persons are at exceptionally high risk of becoming seriously ill or dying from S. dublin exposure, and therefore raw milk is a particular health hazard for such persons.

Aged↗
PubMedDate not supplied

Encore performance. Discovering new directions in gaming.

The use of games as a teaching method for mandatory education programs has increased in popularity in recent years. Games provide a fresh, enjoyable learning experience for content often viewed as relatively dry, boring material. The challenge remains for educators to develop new approaches for learners to maintain interest, enthusiasm, and knowledge of essential content. This article offers a variety of creative approaches that can be utilized to "keep the drive alive" and to continue this effective, efficient, and highly accepted strategy of game use.

Boredom↗