Modern thought often places fruits and vegetables at odds with each other. A food can belong to one but not both. Botanically speaking, a fruit develops from the wall of a plant's ovary and encases the seeds, so back in 1893, John Nix was right: Botanists consider tomatoes a fruit, not a vegetable.
and cough in dogs are more commonly the result of a complex of infectious agents including. viruses rather than a single bacterial species. Clearly, Bordetella species can cause symptoms of upper respiratory infection in dogs, and. bordetella species are considered the single most important causal agent for CIRD.
Other viral respiratory infections include influenza and pneumonia. In small children, viruses also commonly cause croup (which is inflammation of the upper and lower airways, called laryngotracheobronchitis) or lower airways (bronchiolitisâsee Bronchiolitis).or example, common cold viruses infect only cells of the upper respiratory tract. Additionally, most viruses infect only a few species of plants or animals. Some infect only people. Many viruses commonly infect infants and children (see Viral Infections in Infants and Children).