As humans encroach further into ecosystems, people and wildlife are brought into closer proximity. One potential consequence is an increased risk of pathogens jumping from animals to humans, prompting researchers to explore the dynamics of how viruses circulate in nature and how best to prevent the risk of this transmission. New research from Thailand identified genetic material belonging to Betacoronaviruses, a genus of viruses that includes the strains responsible for Covid-19, SARS and MERS, within commercially available agricultural products, raising concerns over a general lack of safety protocols to protect harvesters and handlers from exposure. In the study, published in PLOS One, researchers screened 41 samples of bat guano fertilizers commonly sold in Thai markets for the presence of coronaviruses. While all the samples were from products bought in Thailand, the researchers couldn’t determine the exact origins of the guano contained in each product, which may have been from outside the country. Two of the samples tested positive for Alphacoronaviruses, another genus of coronaviruses, and one tested positive for Betacoronaviruses. Genetic analysis showed the Betacoronavirus sample was closely genetically related to the sarbecovirus subgenus, the group that includes the Covid-causing pathogen, SARS-CoV-2. Importantly, the researchers note the viral strains detected are not known to infect humans. Moreover, they only detected a fragment of viral RNA, the genetic blueprint of viruses, and did not fully isolate a live virus in the samples. As a result, they couldn’t definitively confirm the genetic material detected is capable of posing risks to human health.…This article was originally published on Mongabay
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