coronavirus. This type of virus has the ability to jump and adapt from one species to another causing infectious diseases called zoonotic, which pointed to a possible animal origin for the virus. In fact, several researchers had already warned that the property of jumping from one species to another of the coronaviruses is a time bomb that at any moment could cause a pandemic like the one that affects us right now. The characterization of SARS-CoV-2 as a coronavirus also reinforced early hypotheses that the virus could have emerged in a Wuhan market where wild animals were being sold. Unfortunately, the dismantling of the market shortly after the start of the outbreak made it impossible to fully investigate which animal could be the

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source of the infection. Without the ability to compare Romania Phone Number List the SARS-CoV2 genome with samples taken from market animals, the researchers turned to databases. Thus, the next step to estimate the origin of SARS-CoV-2 was to compare its sequence with that of other coronaviruses already identified in humans or other mammalian species . This comparison has provided very relevant information about its possible origin, but has also raised new questions about how it happened. Bats and pangolins related to the origin of SARS-CoV-2 The first candidates to be the species from which SARS-CoV-2 came were bats. These animals are a very important reservoir of coronaviruses and coronaviruses very similar to SARS-CoV-2 have been found in

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samples obtained from them. However, it has not been possible to establish a direct relationship between these coronaviruses and SARS-CoV-2, which points to a possible intermediate host . One possible candidate is the pangolin. From samples taken from pangolins rescued from illegal trade, coronaviruses very similar to SARS-CoV-2 have been identified, especially in a region critical for the binding of the virus to the host cell. This result suggests the pangolin as an intermediate species. ” The role that pangolins have played in the emergence of SARS-CoV-2 (the cause of COVID-19) is still unclear, ” said Edward Holmes, an evolutionary virologist at the University of Sydney who has participated in the characterization of the virus genome and research

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