[Effect of heliogeophysical factors on the biological activity of Staphylococcus aureus]

In 1988-89, an experimental was carried out to study the effect of heliogeophysical factors on the biological activity of Staphylococcus aureus, one of the most widespread causative agents of infectious diseases in man and animals. For comparison, both individual heliogeophysical factors and interrelated phenomena in the system Sun-Earth arising from solar flashes were used. Two types of solar flashes were revealed. A near-annual cycle of changes in DNase activity of staphylococci in vitro was revealed, which correlates with the cycle of changes in electron concentration of layer F2 of the ionosphere. The correlation coefficient is 0,96%. It was found that the threshold of susceptibility of test-microorganisms to heliogeophysical influences is different in different years. There is an "amplitude window" of the influence whose upper boundary varies in different periods.