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.
Eastern green mamba
The eastern green mamba ("Dendroaspis angusticeps"), also known as the common mamba, East African green mamba, green mamba, or white-mouthed mamba, is a large, tree-dwelling, highly venomous snake species of the mamba genus "Dendroaspis". This species of mamba was first described by a Scottish surgeon and zoologist in 1849. This snake mostly inhabits the coastal regions of southern East Africa. Adult females average approximately in length, and males are slightly smaller. Eastern green mambas prey on birds, eggs, bats, and rodents such as mice, rats, and gerbils. They are shy and elusive snakes which are rarely seen, making them somewhat unusual among mambas, and elapids in general. This elusiveness is usually attributed to the species' green colouration which blends with its environment, and its arboreal lifestyle. However, eastern green mambas have also been observed to use "sit-and-wait" or ambush predation like many vipers, unlike the active foraging style typical of other elapids, which may be a factor in the rarity of sightings.