The main feature of feline coronavirus infection is its manifestation in the form of peritonitis. Feline infectious peritonitis is a highly lethal disease that lacks primary prevention and therapy. Therefore, feline infectious peritonitis is an epizootic problem in the near future. In our review, we demonstrate the current clinical, diagnostic, and therapeutic interventions for feline infectious peritonitis, as well as hypotheses of origin.
Coronaviruses (CoVs) pose a huge threat to public health as emerging viruses. Bat-borne CoVs are especially unpredictable in their evolution due to some unique features of bat physiology boosting the rate of mutations in CoVs, which is already high by itself compared to other viruses. Among bats, a meta-analysis of overall CoVs epizootiology identified a nucleic acid observed prevalence of 9.8% (95% CI 8.7–10.9%). The main objectives of our study were to conduct a qPCR screening of CoVs’ prevalence in the insectivorous bat population of Fore-Caucasus and perform their characterization based on the metagenomic NGS of samples with detected CoV RNA. According to the qPCR screening, CoV RNA was detected in 5 samples, resulting in a 3.33% (95% CI 1.1–7.6%) prevalence of CoVs in bats from these studied locations. BetaCoVs reads were identified in raw metagenomic NGS data, however, detailed characterization was not possible due to relatively low RNA concentration in samples. Our results correspond to other studies, although a lower prevalence in qPCR studies was observed compared to other regions and countries. Further studies should require deeper metagenomic NGS investigation, as a supplementary method, which will allow detailed CoV characterization.
More than 60% of human viral pathogens are of zoonotic origin, resulting from accidental or frequent animal infections. Bats are reservoirs of various viruses, pathogens in humans of varying severity from mild asymptomatic forms to severe lethal outcomes. And are associated with the spread of various viruses (Marburg virus, Ebola virus) and, above all, coronaviruses. Since the 2000s, three independent outbreaks of coronaviruses with the emergence of new zooanthroponotic human coronaviruses (Betacoronavirus) with epidemic and pandemic potential have been registered. The first outbreak was reported in 2002 (SARS), caused by SARS-CoV, in the PRC (Guangdong Province). The second outbreak occurred in 2012 (MERS, MERS), associated with MERS-CoV, Saudi Arabia. The third occurred in 2019 PRC (Hubei Province), this case evolved into a COVID-19 pandemic caused by SARS-CoV-2. These cases seem to be independent, but the literature reports that the emergence of all these viruses is related to evolutionary processes driven by environmental and genetic aspects. It is assumed that the coronavirus causative agent of severe acute respiratory syndrome-2 (SARS-CoV-2) originated from a coronavirus-infected bat of the genus Rhinolophus. After initial emergence, due to the host vector. SARS-CoV-2 is now transmitted worldwide through human-to-human transmission. Data from experimental studies show that animal species such as cats, ferrets, raccoon dogs, Javanese macaques, rhesus macaques, white-tailed deer, rabbits, Egyptian fruit bats and Syrian hamsters are susceptible to SARS-CoV-2 infection. However, natural SARS-CoV-2 infections have only been reported in domestic dogs and cats, tigers, lions, snow leopards, cougars and gorillas in zoos, and farm-raised mink and ferrets. Although human-to-animal transmission has been reported in several cases, animal-to-human transmission of SARS-CoV-2 has been reported only from mink to humans on mink farms.
In the Russian Federation, cases of infection with trichinosis in a population of people or animals are annually recorded. Trichinosis is intestinal and tissue helminthiasis of humans and a number of mammals, caused all over the world by nematodes. A person becomes infected with the parasite by eating meat containing live encapsulated Trichinella larvae. Mating takes place in the gastrointestinal tract, fertilized females are introduced into the intestinal mucosa with their anterior thinned ends. The clinical picture of trichinosis is accompanied by the development of myositis, degeneration of muscle fibers, and multiple edema. Deaths are not uncommon due to necrotic ulcerative lesions of the intestine and internal bleeding.
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