According to foreign media reports, the new crown epidemic is still rampant worldwide. Many people are still sick, or will get sick in the next few weeks or months, and vaccines may be the only way to really fight it. Now, new research shows that humans are not the only species to be infected with the virus. Dogs and cats have been studied for months about their response to the virus, and they seem to be infected with the virus as well, < / P > < p > is published in the proceedings of the National Academy of Although both cats and dogs may be infected with the virus, they do not show symptoms and are basically unaffected by the virus, especially cats, which seem to be much more effective than initially thought. In the experiment, < / P > < p > in the experiment, the cat was deliberately infected with the new coronavirus, and then came into close contact with other cats. The dog received the same operation. In the end, the dogs did not show any ability to transmit the virus to each other, which is good news. At the same time, although the cat transmitted the virus to other cats, there was a turning point. < / P > < p > it is worth noting that although cats infected in the laboratory are highly infectious and release active viruses, they can establish a strong defense mechanism against reinfection. Cats carrying the virus developed immunity that was much stronger than other species observed in the laboratory environment. < / P > < p > unfortunately, there is a problem. Because of the long duration of the tests, no one knows how long a cat can maintain a strong immunity. Is this a transient phenomenon or is the infected cat permanently protected from infection? We don’t know about this yet, but the intensity of the immune system’s response to the virus after infection suggests that they may be a good target for vaccine related research. Global Tech