[1st isolation of strains of Staphylococcus aureus producing toxic shock syndrome toxin 1 in food handlers in Argentina]. 1990

O N Puig de Centorbi, and O C López, and L E Alcaraz, and A M Abdón de Cuadrado
Cátedra de Bacteriología II, Facultad de Química, Bioquímica y Farmacia, San Luis, Argentina.

Thirty nine milk handlers from a factory of dairy products in the Province of Buenos Aires were examined for their nasal carriage of S. aureus strains capable of producing toxic-shock-syndrome toxin-1 (TSST-1). In addition, chance samples of handled foods, crude milk and milky fermented derivates (MFD) were studied. Strain isolation was made on Mannitol Salt Agar and on Baird-Parker Agar. Typical colonies were identified by their biochemical properties. Cultures that were found to be S. aureus were selected for analysis of the TSST-1 production. Eight milk handlers (20.5%) were carriers of S. aureus strains. Seven isolates (87.5%) were classified as biotype A (human ecovar) and 1(12.5%) was classified as biotype B (swine and poultry ecovar). Three out of 8 S. aureus biotype A isolates (37.5%), produced TSST-1. Taking into account the number of milk food handlers sampled (39), the carried rate of toxigenic strains was 7.6%. Three S. aureus strains were isolated from crude milk; 1(33.3%) was classified as biotype B and 2(66.6%) as biotype C (cattle and sheep ecovar). Thirteen S. aureus strains were isolated from MDF; 5(38.0%) were classified as biotype A, 1(7.7%) as belonging to biotype B and 7(53.8%) as belonging to biotype C. None of them had the ability to produce TSST-1.

UI MeSH Term Description Entries
D008892 Milk The off-white liquid secreted by the mammary glands of humans and other mammals. It contains proteins, sugar, lipids, vitamins, and minerals. Cow Milk,Cow's Milk,Milk, Cow,Milk, Cow's
D009296 Nasal Cavity The proximal portion of the respiratory passages on either side of the NASAL SEPTUM. Nasal cavities, extending from the nares to the NASOPHARYNX, are lined with ciliated NASAL MUCOSA. Nasal Cavities,Cavities, Nasal,Cavity, Nasal
D002353 Carrier State The condition of harboring an infective organism without manifesting symptoms of infection. The organism must be readily transmissible to another susceptible host. Asymptomatic Carrier State,Asymptomatic Infection Carrier,Inapparent Infection Carrier,Presymptomatic Carrier State,Presymptomatic Infection Carrier,Super-spreader Carrier,Superspreader Carrier,Asymptomatic Carrier States,Asymptomatic Infection Carriers,Carrier State, Asymptomatic,Carrier State, Presymptomatic,Carrier States,Carrier, Super-spreader,Carrier, Superspreader,Carriers, Super-spreader,Carriers, Superspreader,Inapparent Infection Carriers,Infection Carrier, Asymptomatic,Infection Carrier, Inapparent,Infection Carrier, Presymptomatic,Presymptomatic Carrier States,Presymptomatic Infection Carriers,Super spreader Carrier,Super-spreader Carriers,Superspreader Carriers
D003611 Dairy Products Raw and processed or manufactured milk and milk-derived products. These are usually from cows (bovine) but are also from goats, sheep, reindeer, and water buffalo. Dairy Product,Product, Dairy,Products, Dairy
D004768 Enterotoxins Substances that are toxic to the intestinal tract causing vomiting, diarrhea, etc.; most common enterotoxins are produced by bacteria. Staphylococcal Enterotoxin,Enterotoxin,Staphylococcal Enterotoxins,Enterotoxin, Staphylococcal,Enterotoxins, Staphylococcal
D005506 Food Contamination The presence in food of harmful, unpalatable, or otherwise objectionable foreign substances, e.g. chemicals, microorganisms or diluents, before, during, or after processing or storage. Food Adulteration,Adulteration, Food,Adulterations, Food,Contamination, Food,Contaminations, Food,Food Adulterations,Food Contaminations
D005511 Food Handling Any aspect of the operations in the preparation, processing, transport, storage, packaging, wrapping, exposure for sale, service, or delivery of food. Food Processing,Handling, Food,Processing, Food
D005516 Food Microbiology The presence of bacteria, viruses, and fungi in food and food products. This term is not restricted to pathogenic organisms: the presence of various non-pathogenic bacteria and fungi in cheeses and wines, for example, is included in this concept. Microbiology, Food
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia

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