Strongyloides hyperinfection syndrome--an unappreciated opportunistic infection.

A case of respiratory hyperinfection syndrome which occurred in a patient on long term corticosteroid therapy is reported here for it's rarity. Intestinal infection with this parasite should be looked for and treated before the initiation of immunosuppressive therapy.

Cyclospora cayetanensis--an emerging coccidian parasite.

Over the last decade increasing number of enteritis cases have been attributed to infection with a new coccidian sp that was named Cyclospora cayetanensis in 1993. Diarrhoea caused by this agent is clinically indistinguishable from cryptosporidiasis, isosporiasis and microsporidiasis but cyclospora infection are often very prolonged (upto 15 weeks) and may cause severe weight loss. Diagnosis is important because unlike diarrhoea caused by cryptosporidium and microsporidium, treatment with co-trimoxazole is effective. We report here a case of cyclosporiasis, to increase awareness of possibility of cyclospora infection in patients with prolonged diarrhoea. It should be considered in assessment of patients with unexplained prolonged diarrhoeal illness.

Typhoid fever caused by a typical variants of Salmonella typhi--a preliminary report.

In the study carried out from, February, 1996 to January, 1999. 42 (33.9%) a typical variants of S typhi which fermented sucrose were encountered. This variant was identified as of antigenic structure 9, 12, v1, d1 and typed as phage type E1 and Bio type I.