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Réunion Island (Indian Ocean) has been suffering from its first known Chikungunya virus (CHIKV) epidemic since February 2005. To achieve a better understanding of the disease, a questionnaire was drawn up for hospital staff members and their household. CHIKV infected about one-third of the studied population, the proportion increasing with age and being higher in women. Presence of a garden was associated with CHIKV infection. The geographical distribution of cases was concordant with insect vector Aedes albopictus distribution. The main clinical signs were arthralgia and fever. The disease evolved towards full recovery in 34.4% of cases, a relapse in 55.6%, or a chronic form in 10%. Paracetamol was used as a painkiller in 95% of cases, sometimes associated with non-steroidal anti-inflammatory drugs, corticoids, or traditional herbal medicine. The survey provided valuable information on the factors that favour transmission, the clinical signs, the importance of relapses and the therapies used.

In France, one of the aims of the current national Alzheimer's disease plan is to collect data from all memory centers (memory units, memory resource and research centers, independent neurologists) throughout the country. Here we describe the French Alzheimer Information System and present a 'snapshot' of the data collected throughout the country during the first year of operation. We analyzed all data transmitted by memory centers between January 2010 and December 2010. Each participating center is required to transmit information on patients to the French National Alzheimer dataBank (BNA). This involves completing a computer file containing 31 variables corresponding to a limited data set on AD (CIMA: Corpus minimum d'information Alzheimer). In 2010, the BNA received data from 320 memory centers relating to 199,113 consultations involving 118,776 patients. An analysis of the data shows that the initial MMSE (Mini Mental State Examination) mean score for patients in France was 16.8 points for Alzheimer's disease, 25.7 points for mild cognitive impairment, and 18.8 points for 'related disorders related disorders. The BNA will provide longitudinal data that can be used to assess the needs of individual local health areas and size specialized care provision in each regional health scheme. By contributing to the BNA, the memory centers enhance their clinical activity and help to advance knowledge in epidemiology and medical research in the important field of Alzheimer's disease and related dementias.

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This study highlights the diversity of approaches and methods developed to monitor prison health in high-income countries. Analysis of these different situations provides an insight into the feasibility of and requirements for the development of an efficient prison health surveillance system.