Mumps
Mumps is spread from person to person through contact with respiratory secretions, such as saliva from an infected person. When an infected person coughs or sneezes, the droplets aerosolize and can enter the eyes, nose, or mouth of another person. Mumps can also be spread by sharing eating utensils or cups. The virus can also survive on surfaces and then be spread after contact in a similar manner. A person infected with mumps is contagious from approximately seven days before the onset of symptoms until about eight days after symptoms start. The incubation period (time until symptoms begin) can be from 12–25 days, but is typically 16–18 days. 20-40 percent of persons infected with the mumps virus do not show symptoms, so it is possible to be infected and spread the virus without knowing it.
Brome mosaic virus
Environments that are most suitable for this disease are generally damp due the fact that viruses are transmitted easier when the plants are wet. It is also found in areas that have a heavy amount of wheat plants present and where there is a lot of human contact or exposure Humans are one of the most common vectors used to spread this disease. The temperature range at which this disease is most infective at 20°C to 36°C, according to “Plant Viruses” on page 417. There are multiple vectors for this virus. The vector that is most associated with this disease is the "Oulema melanopus L". beetle, (agroatlas.ru). This beetle is found over a large portion of the Midwest and is one of the biggest carriers of this pathogen.The importance of this disease is it can severely reduce yield of the host plants and the fact it has a wide variety of host plants that it infects. In as study performed in Ohio, they found that the BMV can reduce yield by as much as 61% in soft red winter wheat. The findings found in the Ohio study suggest that Brome Mosaic Virus might have a greater impact on wheat production than previously thought (Hodge, 2018). Farmers have to take great measures to prevent and contain this virus in order to ensure that they produce a quality crop with maximum yield, (Stabilization of Brome Mosaic Virus, page 99-101).