Especially our generation, which has inherited this situation and is the one that really has the power to solve it or at least try to minimize its effects. Facing this problem caused by the action of man, we have the responsibility and the dire need to fix it. On the other hand, the global climate change that human beings have caused favors the expansion of both pathogenic microorganisms and vectors outside of their common affected areas due to their preference for humid and warm environments, facilitating the appearance of certain species in new areas where they can carry previously unknown or eradicated diseases. Some of these reservoir animals infected several prairie dogs that acted as vectors, causing the infection of 47 people. For example, in 2003, the virus that causes the disease known as monkeypox was introduced into the United States through a shipment carrying 800 small mammals from Ghana to Texas. that can be a reservoir of these diseases. In addition, this type of behavior generates an increase in contact between humans, livestock and domestic animals with wild animals. These practices encourage the proliferation of species with a stronger immune system, such as rats or bats and other reservoir animals for pathogens that cause zoonotic diseases. Consequently, the development of pathogens, potential hosts and vectors is favored, since they are more comfortable in their environment given the scarcity of other more hostile species. Activities such as deforestation for the establishment of crops and livestock or for the growth of cities, the trafficking of species and the fragmentation of habitats through the construction of roads alter the balance of ecosystems and reduce biodiversity. But why is this increase in zoonotic diseases taking place? Evidence points to the increasing intervention of human beings in the Earth’s ecosystems.
We are talking about pathogens that cause diseases such as AIDS, Covid-19, swine flu, Crimean-Congo hemorrhagic fever or monkeypox, among others. In this last century, an average of two viruses a year have passed from their original host to humans. These are microorganisms that initially infected animals and, due to small mutations, are capable of infecting humans. DISCOVER THEM Approximately 60% of human pathogens studied are zoonotic that is, they are transmitted to humans from animals. MORE INFO Enjoy our special editions at a single price for being a subscriber.
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