Molecular identification of Mycobacterium bovis and the importance of zoonotic tuberculosis in Mexican patients.

Setting: The epidemiology of zoonotic tuberculosis (ZTB) in humans in Mexico is poorly known.

Objective: To identify isolates of Mycobacterium bovis in humans and cattle by polymerase chain reaction (PCR), and establish the clinical and epidemiological importance of ZTB in humans.

Design: From 1995 to 2009, 124 isolates from patients with TB and 60 isolates from cattle were analysed.

Nested polymerase chain reaction in the diagnosis of cervical tuberculous lymphadenitis in Mexican children.

Setting: Cervical tuberculous lymphadenitis (CTBL) diagnosis is a critical problem due to the difficulty in culturing Mycobacterium tuberculosis.

Objective: To evaluate a nested polymerase chain reaction (nPCR) for the diagnosis of CTBL.

Design: Thirty-eight children initially diagnosed on the basis of clinical and laboratory criteria as suffering from chronic cervical lymphadenitis were included in the study.

Biotypes and serotypes of Haemophilus influenzae of clinical isolates from Mexican children.

Background: Infectious diseases caused by H. influenzae type b are considered preventable through vaccination with Hib conjugate vaccines. Some countries which follow Hib vaccination programs are close to eradication of the disease.

[Haemophilus influenzae infections in 2 hospitals in the city of Puebla, Mexico].

Haemophilus influenzae has been recognized as one of the most important pathogen in the pediatric population younger than 5 years old. We analized some characteristics of the infectious diseases by Haemophilus influenzae in the pediatric group from 1985 to 1990 in two hospitals of Puebla city. From 321 children studies cases included for this work, fifty of those had infectious diseases by H.