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When system developers design a computer system (or other information ar-tifact), they must inevitably make judgments as to how to abstract the worksystem and how to represent this abstraction in their designs. In the past, such abstractions have been based either on a traditional philosophy of cogni-tion or cognitive psychology or on intuitive, spontaneous(More)
A total of 65 isolates of Streptococcus suis was recovered from various tissues of diseased pigs. Almost 96% of all these isolates could be categorized as one of capsular types 1 to 22 and 1/2. Capsular type 2 was the most prevalent and represented 53.8% of all isolates, followed by capsular types 1 (9.2%), 1/2 (7.7%) and 8 (4.6%). Brain-meninges, multiples(More)
A total of 522 Streptococcus suis isolates were recovered from the tonsils of slaughtered pigs by culturing on media containing different specific antisera. The serogroup reactions were determined by coagglutination. The most frequently isolated serotype was serotype 4 (representing 28.7% of the isolates), followed by serotype 3 (24.9%) and serotype 2(More)
The reactogenicity and immunogenicity of the administration of recombinant vaccine against hepatitis B simultaneously (but at separate sites) with diphtheria/tetanus/pertussis (DTP) and oral polio vaccines were examined. Six hundred and twenty-six children (group I) were given hepatitis B vaccine at 0, 2 and 6 months of age; the other vaccines were(More)
From November 2000 to May 2001, 208 clinical samples were analyzed for respiratory infection. Parallel to the detection of the syncytial respiratory virus (SRV) by solid phase immunoassay (EIA) and rapid culture in shell-vial or conventional tube, a reverse transcription polymerase chain reaction (RT-PCR) technique was developed. The procedures were(More)