_____________________________________________________________________________________________________ *Corresponding author: E-mail: zeynalovaeddm@gmail.com; Ann. Res. Rev. Biol., vol. 38, no. 1, pp. 1-11, 2023 Annual Research & Review in Biology Volume 38, Issue 1, Page 1-11, 2023; Article no.ARRB.95743 ISSN: 2347-565X, NLM ID: 101632869 Clinical Signs of Seasonal Disease Dynamics in Calves Caused by Rotavirus and Coronavirus Infections Vusal Abbasov a* and Shalala Zeynalova b a Scientific-Research Veterinary Institute, Baku, Azerbaijan. b 3-rd Biosafety Level Central Reference Laboratory, Baku, Azerbaijan. Authors’ contributions This work was carried out in collaboration between both authors. All authors listed, have made substantial, direct and intellectual contribution to the work and approved it for publication. Both authors read and approved the final manuscript. Article Information DOI: 10.9734/ARRB/2023/v38i130563 Open Peer Review History: This journal follows the Advanced Open Peer Review policy. Identity of the Reviewers, Editor(s) and additional Reviewers, peer review comments, different versions of the manuscript, comments of the editors, etc are available here: https://www.sdiarticle5.com/review-history/95743 Received: 28/11/2022 Accepted: 21/01/2023 Published: 22/01/2023 ABSTRACT The study of animal diseases increases the relevance of the livestock industry, which is the main leading component of the strategy for the development of agriculture in Azerbaijan. An important roleour country. Their research is critical in the implementation of measures to combat rotavirus and coronavirus infections in infant calves. The primary goal of this study was to investigate the seasonal dynamics of accompanying diarrhea in calves caused by rotavirus and coronavirus infection. The research was carried out on farms located in the northwestern region of the Azerbaijan republic. Fecal samples were used as material and tested by chromatographic immunoassay for the qualitative detection of rotavirus and coronavirus antigen. The study revealed that the clinical signs of diarrhea in calves caused by rotavirus and coronavirus infections in farms located in the northwest region of the country are relatively similar. However, there was a relatively higher incidence of rotovirus infection, and mortality relative to coronavirus Original Research Article