by Leah Chandler. Disease Etiology: Malaria is a protozoan disease, which are a group of eukaryotic single-celled organisms that infect humans and inhabit the body as parasites. Malaria is caused by four species of the protozoan genus Plasmodium, P falciparum, P vivax, P malariae, and P ovale.
The average NFL referee salary was $173,000 in 2013, and it is set to rise to $201,000 by 2019. Note that the NFL season only lasts about half the year, and for most NFL referees, refereeing is not their only job.
According to TheRichest.org, NHL referees earn a yearly salary between $110,000 and $255,000. Wes McCauley is one of the top referees in the NHL and has worked several Stanley Cup Finals games. In a May 2011 article for Lansingnoise.com, NHL referee Wes McCauley states that he works three to four games per week.