Avian Flu H5N8 Symptoms. This virus, clade 2.3.4.4 b, was closely related to avian h5n8 viruses circulating in europe at the time. Avian influenza (bird flu) is a notifiable animal disease.
Other early symptoms may include abdominal pain, chest pain and diarrhoea. Low pathogenicity avian influenza viruses typically produce respiratory signs such as sneezing, coughing, ocular and nasal discharge, and swollen infraorbital sinuses in poultry. We detected a highly pathogenic avian influenza a(h5n8) virus in lung samples of 2 gray seals (halichoerus grypus) stranded on the baltic coast of poland in 2016 and 2017.