According to modern concepts one of the factors that determines the potential for mold to become dangerous to humans, may be its dimorphism (two paths of growth). Among the fungi Penicillium - one of the most common general in nature - in the last decade, the ability to cause deep mycoses detected in only one. Cases of food poisoning caused by this mold are described in Southeast Asia. Other dangerous properties of molds that cause human disease are the opportunity to develop at higher temperatures. Scientists propose even consider mold that can grow at 37 ° C. These properties are most members of the genus Aspergillus, including quite a few species are dangerous to humans, but so far not revealed cases of dimorphism. In developed countries of the northern latitudes the problem the negative impact of mold on people can be exacerbated for several reasons. Chief among them is the formation of a man of his environment. The fact that people are careful to create a residential and public buildings more comfortable for themselves the conditions that differ significantly from the environment contributes to the development of mold. These conditions are as good for molds: constantly maintained temperature in the apartments. Whitewashing, wallpaper, paper, textiles, carpets, leather, wood paneling – it is all suitable substrates for the growth of microscopic fungi. And plus the sealed windows create thermostats with high humidity from the premises. The use of air conditioning does not always help solve the problem. One has to check out the food that he eats regularly. Repeatedly been shown that, if you not cleaned it regularly and not to change the filters, mold may develop there. Modern cities are special ecosystems that are very different from natural climatic, physic-chemical properties of soil and atmosphere, the community structure of animals, plants, microorganisms, the presence of a large number of facilities, high levels of environmental pollution. In the ground layers of air mold can easily be spread by both the fungal spores (from soil surface to the house) and with particles of soil dust in the city. Any organisms in the natural world are primitive interpreted only as something bad or good. Relationship between man and wildlife is much more complicated and interesting. We take for granted the animal kingdom and respect them, whether it's a crocodile, a rattlesnake, a scorpion or a polar bear, but keep them at the bay and keep special security measures. Why would not apply to the kingdom of fungi?
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