Diseases, Conditions, Syndromes

How to use statistics to prepare for the next pandemic

Publicly available statistics about population demographics and culture can help governments prepare for the next pandemic. We have found that by using existing socio-demographic data from early COVID-19 hot spots, where ...

Diseases, Conditions, Syndromes

WHO says Africa to see 1st vaccine doses from COVAX in March

Africa should see the first COVID-19 vaccine doses in March from the global COVAX effort aimed at helping lower-income countries obtain the shots, the World Health Organization's Africa chief said Thursday, as deaths on the ...

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Population size

In population genetics and population ecology, population size (usually denoted N) is the number of individual organisms in a population.

The effective population size (Ne) is defined as "the number of breeding individuals in an idealized population that would show the same amount of dispersion of allele frequencies under random genetic drift or the same amount of inbreeding as the population under consideration." Ne is usually less than N (the absolute population size) and this has important applications in conservation genetics.

Small population size results in increased genetic drift. Population bottlenecks are when population size reduces for a short period of time.

Overpopulation may indicate any case in which the population of any species of animal may exceed the carrying capacity of its ecological niche.

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