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Infections are among the most important occupational risks for healthcare workers. Some infections can be prevented through vaccination but, in other cases, there are no vaccines to prevent them, as happens with infections from antimicrobial-resistant organisms. Precautions related with transmission route and contact isolation or respiratory isolation are very important in order to protect healthcare workers and other patients. In this paper, the authors reviewed biological hazards for healthcare workers and described the procedures undertaken by an occupational health department (OHD) of a Portuguese hospital where vancomycin-resistant Staphylococcus aureus (VRSA) was isolated from a patient, for the first time in Europe. After the VRSA strain isolation, healthcare workers were instructed to adopt contact preventive measures. Nasal swabs were cultured weekly in 33 healthcare workers for several weeks until the patients' culture changed to negative. In the meantime, OHD prepared actions to adopt in case of VRSA colonization or infection in healthcare workers.

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Amostras de saliva total estimulada e dos níveis salivares de estreptococos mutans e de lactobacilos foram obtidas de 40 crianças para a quantificação da IgA-S pela técnica de imunodifusão radial simples. Os resultados revelaram que as concentrações da imunoglobulina apresentam correlação positiva estatisticamente significante no nível de 5% com os níveis salivares de lactobacilos para as crianças com índices CPO-S e ceo-s iguais a 0.

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