Virulence genes and genetic diversity of Streptococcus suis serotype 2 isolates from Thailand.

Isolates of Streptococcus suis from different Western countries as well as those from China and Vietnam have been previously well characterized. So far, the genetic characteristics and relationship between S. suis strains isolated from both humans and pigs in Thailand are unknown.

Population-based study of Streptococcus suis infection in humans in Phayao Province in northern Thailand.

Background: Streptococcus suis infection in humans has received increasing worldwide recognition.

Methods And Findings: A prospective study of S. suis infection in humans was conducted in Phayao Province in northern Thailand to determine the incidence and the risk behaviors of the disease in this region in 2010.

The genetic diversity of Mycobacterium tuberculosis strains in Thailand studied by amplification of DNA segments containing direct repetitive sequences.

Objective: To develop and use a polymerase chain reaction (PCR) method for studying the genetic diversity of Mycobacterium tuberculosis.

Design: Two polymorphic DNA segments of M. tuberculosis H37Rv were identified and sequenced.

Isolation of Chlamydia trachomatis among women with symptoms of lower genital tract infection.

Isolation of chlamydia trachomatis from the endocervix using cyclohexamide-treated McCoy cells were done in order to estimate the prevalence rate of its infection among gynecologic out patients who had symptoms and/or signs of lower genital tract infection. There were 498 patients from May 1989 to July 1990. Eighty-six per cent of these patients were 25 years old or older.