Archive for the 'Main' Category

14 Feb

An outbreak of cyclosporiasis in 1996 associated with consumption of fresh berries: DISCUSSION part 2

After the outbreak in 1996, Guatemalan berry growers vol­untarily introduced control measures that focused on improv­ing sanitary conditions and water quality on individual farms. Even so, in the spring of 1997, a cyclosporiasis outbreak in North America was associated with Guatemalan raspberries; during this time, raspberries were imported from only those farms classified by the […]

11 Feb

An outbreak of cyclosporiasis in 1996 associated with consumption of fresh berries: DISCUSSION

the end of August 1996, 1465 cases of cyclosporiasis were reported in North America (740 sporadic and 725 cases related to 55 clusters). Preliminary investigations sug­gested a possible common source for this outbreak. Although several berries including strawberries were initially suspect, Guatemalan raspberries were ultimately implicated. This con­clusion was based on the strength of the […]

10 Feb

An outbreak of cyclosporiasis in 1996 associated with consumption of fresh berries: RESULTS part 2

For cases, the predominant symptoms were diarrhea (96%), fatigue (96%), weight loss (96%), increased gas or bloating (88%), abdominal pain (77%), nausea (61%), headache (54%) and fever (38%). The median weight loss was 3 kg (maximum 8.0 kg). The onsets of illness were from May 16 to June 26, 1996. All 26 cases consulted physicians […]

07 Feb

An outbreak of cyclosporiasis in 1996 associated with consumption of fresh berries: RESULTS

Event-associated clusters: In the index cluster, 35 of the 49 guests became ill (attack rate 71%). The median incubation pe­riod was eight days (range six to 13 days). Only symptomatic persons submitted stool specimens for laboratory testing, of whom 13 (59%) of the 22 were positive for cyclospora oocysts. The epidemic curve (Figure 1) was […]

04 Feb

An outbreak of cyclosporiasis in 1996 associated with consumption of fresh berries: PATIENTS AND METHODS part 2

Case-control study: A matched case-control study was con­ducted to determine further whether consumption of berries was associated with cyclospora infection in Ontario. Sporadic cases were included if they were Ontario residents at least age 18 years and had an onset of symptoms by July 1, 1996. Spo­radic cases were excluded if other enteric pathogens were […]

02 Feb

An outbreak of cyclosporiasis in 1996 associated with consumption of fresh berries

PATIENTS AND METHODS The index Ontario cluster was investigated by the North York Public Health Department, Toronto, Ontario. Ini­tially, cases were ascertained and an environmental inspec­tion of the implicated venue was conducted. Thereafter, a retrospective cohort study examined food and water consump­tion by attendees. For this first cluster, a case was defined as having three […]

10 Jan

Asymptomatic primary hyperparathyroidism: Conservative management of asymptomatic hyperparathyroidism part 3

Calcimimetics. A more targeted approach to the medical thera­py of primary hyperparathyroidism is to interfere specifically with the production of PTH. A new class of agents that alters the function of the extracellular calcium-sensing receptor offers an exciting new approach to primary hyperparathyroidism. By binding to an allosteric site, these agents increase the affinity of […]

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