Scientists have found a link between the change in city lighting, which can be seen on satellite images, and the spread of infection, as the Internet magazine for girls and women 14 to 35 years Pannochka. net brightness of city lights - if you compare its level in several places and for a certain period of time - indicates fluctuations in population. It is logical to assume that the seasonal epidemics of infectious diseases in underdeveloped countries may be related to seasonal migrations of the density of the population is growing, and people are more likely to become infected from each other.

To test this hypothesis, researchers led by Nita Bharti of Princeton University (USA) chose measles - a disease with a very high index of contagiousness (infectiousness), which kills tens of thousands of unvaccinated children. Although large-scale vaccination campaign in poor countries has significantly reduced the mortality figures are frightening. A country whose satellite images from 2000-2004 were to serve as the basis for the study, became Niger. Each year, measles takes the lives of three thousand small nigertsev reports compulenta. ru.

Experts have found that in times of drought the villagers with his family be nominated to work in the city, and it was at this time there are measles outbreaks.

Most noticeable in the three largest cities: the capital Niamey, Maradi and Zinder. But in the northern Agadez, whose economy is based on the extraction of uranium, such fluctuations is almost no.

According to Bharti, if the monitor via satellite for an increase in the brightness of the city lights, you just notice the influx of internal migrants to the city and even in his own area and to vaccinate - not only measles but also from other diseases.

Info. potok. ua.