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<blockquote data-quote="greybeard" data-source="post: 1620166" data-attributes="member: 18945"><p>You (and others) keep saying this, but in the case of COV19, it is far from true. </p><p></p><p></p><p>Canine coronavirus is an intestinal virus transmitted by (you guessed it) sheit eating dogs..and the specific genomes are different from COV19. What causes the differences is generally in the receptors for the virus cells. A protein/enzyme called APN (Aminopeptidase N) is one of them. Usually species specific, but occasionally, a virus can 'attach' to more than one specific species' APN. I know of APN only from the explanation my brother got regarding how his chemotherapy was supposed to work. </p><p></p><p>One of the reasons human corona viruses make such headlines is because the realization that they are sometime zoonotic is relatively a new occurrence. Before SARS-Cov, it was almost unheard of to get a coronavirus from an animal.</p><p></p><p>The textbook <em>Medical Microbiology. 4th edition.</em></p><p><em>Baron S, editor.</em></p><p><em>Galveston (TX): University of Texas Medical Branch at Galveston; 1996.</em></p><p><em>Chapter 60 </em> said this about corona viruses:</p><p></p><p></p><p></p><p>Since SARS, MERS and now Cov19, we now know that to be an untrue statement.</p></blockquote><p></p>
[QUOTE="greybeard, post: 1620166, member: 18945"] You (and others) keep saying this, but in the case of COV19, it is far from true. Canine coronavirus is an intestinal virus transmitted by (you guessed it) sheit eating dogs..and the specific genomes are different from COV19. What causes the differences is generally in the receptors for the virus cells. A protein/enzyme called APN (Aminopeptidase N) is one of them. Usually species specific, but occasionally, a virus can 'attach' to more than one specific species' APN. I know of APN only from the explanation my brother got regarding how his chemotherapy was supposed to work. One of the reasons human corona viruses make such headlines is because the realization that they are sometime zoonotic is relatively a new occurrence. Before SARS-Cov, it was almost unheard of to get a coronavirus from an animal. The textbook [i]Medical Microbiology. 4th edition. Baron S, editor. Galveston (TX): University of Texas Medical Branch at Galveston; 1996. Chapter 60 [/i] said this about corona viruses: Since SARS, MERS and now Cov19, we now know that to be an untrue statement. [/QUOTE]
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