Oral contraceptives, abortion and breast cancer risk: a case control study in Saudi Arabia.

Background: Several studies have examined the relationship between oral contraceptive pill (OCP) use, abortions and breast cancer, with mixed results. Hormonal changes associated with OCP use and abortion may increase risk of breast cancer over time, but there is a lack of studies studying this association in Saudi Arabian women.

Materials And Methods: We thererfore conducted a case control study in 192 women (92 as cases and 100 as controls), aged 30 to 65, and collected information on variables including examples related to study objectives and those which may confound findings.

An outbreak of cyclosporiasis in 1996 associated with consumption of fresh berries- Ontario.

Background: A large foodborne outbreak of cyclosporiasis occurred in North America in 1996. An index cluster of cases associated with a catered event on May 11, 1996, in Ontario sparked the recognition of this outbreak in Canada.

Objectives: To describe the Ontario experience with the North American outbreak of cyclosporiasis in 1996.