Headache is a major worldwide health problem and the second most common type is migraine, with a global prevalence among adults greater than 10%. Migraine mainly affects adults between 25 and 55 years, during the most productive years of life 1 . In Brazil, the prevalence of migraine is estimated to be 15.2% 2 .Lipton et al. 3 demonstrated that migraine is still underdiagnosed and inappropriately treated. They evaluated 4,376 individuals with headache through a computer-assisted telephone interview survey and 536 individuals had migraine, as defined by the International Classification of Headache Disorders -2nd edition 4 (ICHD-2). They found that 48% of migraine sufferers had seen a doctor for headache within the last year and 73% of these reported a physician-made diagnosis of migraine. Of all migraine sufferers, 49% were treated with over-the-counter medications, 23% with prescription medication, 23% with both, and 5% with no medications at all 3 .A study by Bigal et al. 5 with 6,006 participants, conducted in the State of São Paulo, Brazil revealed that migraine was the most prevalent primary headache, accounting for 45.1% of patients reporting headache as their only symptom. In another Brazilian study, the correct diagnosis of migraine by non-specialists was made in only 44.9% of migraine sufferers, The diagnosis of headache was made according to the ICHD-2 criteria. Results: Of the 232 patients, 86% had migraine. The questionnaire showed a sensitivity of 92% (95%CI, 88% to 95%), specificity of 60% (95%CI, 43% to 77%) and a positive predictive value of 93% (95%CI, 89% to 96%). Discussion: Our results were similar to other international studies of the ID-Migraine TM application. The Portuguese version is considered easy to use, and an appropriate screening tool for migraine diagnosis in our sample. Conclusion: Considering the characteristics of our health system, we can infer that this questionnaire would be beneficial in a Brazilian primary care setting; however, more studies are necessary.Keywords: migraine disorders; surveys and questionnaires; headache. O questionário apresentou sensibilidade de 92% (IC de 95% 88% a 95%), especificidade de 60% (IC de 95% 43% a 77%) e valor positivo preditivo positivo de 93% (IC 95 89% a 96%). Discussão: Nossos resultados foram similares a outros estudos mundiais de aplicação do ID-Migraine TM . A versão em Português é considerada de fácil utilização, sendo uma ferramenta adequada para triagem diagnóstica de migrânea em nossa amostra. Conclusão: Considerando as características do nosso sistema de saúde, podemos inferir que este questionário seria útil nos serviços primários de saúde brasileiros, porém mais estudos são necessários.Palavras-chave: transtornos de enxaqueca; inquéritos e questionários; cefaleia.

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CLIA represents an improvement in blood bank serological screening. However, its use in a healthy population appears to result in high rates of false positives. Identifying which characteristics can predict false positives, however, remains a challenge.

Congenital toxoplasmosis resulting reactivation of infection during pregnancy in the studied group leads us to believe that it is a public health problem, especially in our population, in which seroprevalence of T. gondii infections is high. These findings also suggest that special attention is necessary during pregnancy, because the serologic diagnosis may not be indicative of toxoplasmosis reactivation.

Background: Patients on hemodialysis present an increased risk of cardiovascular death. Intimal media thickness (IMT) and presence of arterial calcifications are well-known risk factors for cardiovascular death in hemodialysis patients.

Congenital toxoplasmosis resulting reactivation of infection during pregnancy in the studied group leads us to believe that it is a public health problem, especially in our population, in which seroprevalence of T. gondii infections is high. These findings also suggest that special attention is necessary during pregnancy, because the serologic diagnosis may not be indicative of toxoplasmosis reactivation.

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