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.
Myrmecia regularis
"M. regularis" is a highly aggressive ant that will pursue any intruder to a distance of 1.8–2.7 metres (2–3 yards) if their nests are disturbed. Their stings are very painful and particularly powerful. In some cases, human victims of "M. regularis" bites have displayed an allergy to the venom. In a 2011 study which investigated the causes of ant sting anaphylaxis in Australia, 265 of the 376 human participants reacted to the sting of several "Myrmecia" species. Of these, nine serum samples taken from patients were IgE positive to the venom of "M. regularis". These ants are both diurnal and nocturnal, foraging on the trunks of "Eucalyptus" trees to feed on sap and nectar, or capturing small insects (such as caterpillars and ants in the genus "Camponotus" or subgenus "Orthocrema"). The larvae are carnivorous and exclusively feed on insects, either consuming small portions of the insect or all of it. Unlike most "Myrmecia" species, trophallaxis takes place among adults or between adults and larvae. All stages of the frog "Metacrinia nichollsi" are known to dwell inside "M. regularis" colonies, where they use several galleries constructed by the ants. The parasitic ant "M. inquilina" may attempt to enter "M. regularis" nests to establish colonies, but "M. inquilina" queens may be seized and killed as soon as the two species come into contact.