577 research outputs found
Spreading Patterns of the Influenza A (H1N1) Pandemic
We investigate the dynamics of the 2009 influenza A (H1N1/S-OIV) pandemic by
analyzing data obtained from World Health Organization containing the total
number of laboratory-confirmed cases of infections - by country - in a period of
69 days, from 26 April to 3 July, 2009. Specifically, we find evidence of
exponential growth in the total number of confirmed cases and linear growth in
the number of countries with confirmed cases. We also find that, i) at early
stages, the cumulative distribution of cases among countries exhibits linear
behavior on log-log scale, being well approximated by a power law decay; ii) for
larger times, the cumulative distribution presents a systematic curvature on
log-log scale, indicating a gradual change to lognormal behavior. Finally, we
compare these empirical findings with the predictions of a simple stochastic
model. Our results could help to select more realistic models of the dynamics of
influenza-type pandemics
HYPOXIC STRESS, HEPATOCYTES AND CACO-2 VIABILITY AND SUSCEPTIBILITY TO Shigella flexneri INVASION
Adolescence and the consumption of psychoactive substances: the impact of the socioeconomic status
Effect of LPS on the Viability and Proliferation of Human Oral and Esophageal Cancer Cell Lines
Índice de capacidade para o trabalho e desequilíbrio esforço-recompensa relacionado ao distúrbio de voz em professoras da rede estadual de Alagoas
Photosynthetic capacity and water use efficiency in Ricinus communis (L.) under drought stress in semi-humid and semi-arid areas
Resultados da reconstrucao do ligamento cruzado anterior em atletas amadores de futebol
Effects of the application of Aloe vera (L.) and microcurrent on the healing of wounds surgically induced in Wistar rats
Tuberculosis patients co-infected with Mycobacterium bovis and Mycobacterium tuberculosis in an urban area of Brazil
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