outbreak of cholera in Ajdabiya-Libya

During an outbreak of cholera in Libya, 15 [79%] out of 19 diarrhoeal samples from non-Libyans yielded V cholera 01 strains of E1 Tor biotype and Ogawa serotype. Isolates were [BETA]-haemolytic on blood agar, grew on CLED medium and were positive for VP test. The organisms were resistant to cotrimoxazole chloramphenicol, tetracycline and to the vibriostatic compound 0/129. However, they were sensitive to nalidixic acid, norfloxacin, ofloxacin, carbenicillin and ampicillin. The possible source of infection was attributed to polluted well drinking water

prevalence of actinobacillus actinomycetemcomitans in a Scottish chronic periodontitis patients

The prevalence of A.actinomycetemcomitans in 98 Scottish patients with chronic periodontitis [302 subgingival sites] and 55 health control subjects was investigated. The organism was isolated from 39% of patients and from 27% of the total samples collected. However, only one 2% of the 55 control subjects possessed A.actinomycetemcomitans. A.actinomycetemcomitans was isolated overall from more sites in male patients [60%] compared to female patients [40%]. In general there were no clear differences between the prevalence of A.actinomycetemcomitans in the six different segments sampled in the 98 patients