| [sanitary quality of ham eaten in mexico city]. | microbiological results of 2,539 hams were analyzed (counts of mesophilic aerobes, salmonella sp. and s. aureus) at the national public health laboratory from 1979 to 1987. in 58.7 percent of the cases the hams were not acceptable for human consumption, due to any of the above mentioned microbiological determinations. the main cause was the finding of high levels of mesophilic aerobes (57.5%), followed by salmonella sp (4.4%) and s. aureus (0.43%). raw, cooked and smoked hams presented the highe ... | 1989 | 2772735 |
| [sanitary control of food in mexico city]. | this work was undertaken as to avoid health risks to tourism in the "xiith soccer world cup, mexico 86". the above project was carried out through proper quality control of foods, drinking water as well as a definite care of personal hygiene of all those involved in the catering business (132 restaurants were included). the mentioned report informs only of the work of the national public health laboratory in the sanitary epidemiological program. the following products were analyzed: 133 water sa ... | 1989 | 2711259 |
| risk of diarrhea during the first year of life associated with initial and subsequent colonization by specific enteropathogens. | the incidence of colonization by enteropathogenic, enterotoxigenic, enteroinvasive, and enterohemorrhagic escherichia coli (detected by dna hybridization with specific radiolabeled probes), salmonella sp., shigella sp., campylobacter jejuni, and rotavirus was related to the presence of diarrhea in a cohort of 75 rural infants followed longitudinally during the first year of life. the study was carried out between august 1985 and february 1987 in the village of lugar sobre la tierra blanca, in th ... | 1990 | 2157338 |