If it is thought that the aggregate characteristics of epidemic incidence are being driven by spatial aspects of transmission (such as waves), it is difficult to investigate data from these systems with models that do not represent space in some way.
With respect to the hypotheses put forward regarding the origin of outbreaks of the moth, this study confirms the role of migration in outbreak causation, while negating the belief that endemic populations aggregate to cause an epidemic.
In this article, we provide an overview of the state of research on the likely economic impact of the US obesity epidemic at the aggregate level.
Epidemic data were then aggregated daily, by 3 days periods and by 6 days periods.
In both instances we used HIV surveillance data from antenatal clinics and household surveys and aggregated the trends to determine the national epidemic.
We therefore define this category as epidemic transmission, which uses all the sentinel chickens in aggregate.
This suggests such aggregate data may be quite robust to great heterogeneity in reporting and epidemic patterns at the regional level.
The aggregate utilization of the 15 hospice wards during the peak period of the SARS epidemic in Taiwan was lower than that during the Chinese New Year holidays.
The severe HIV epidemic in KwaZulu-Natal has not been shown to be a main determinant of aggregate fertility decline.
However, as EVD was not considered a high priority threat before the start of this ongoing epidemic, information pertaining to the above goals is not yet available at a single, aggregated source.
