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 Bureau of Labor Statistics 2014-15 average yearly income of boxing referees and judges is round about $25,000 a year but some of the high profile referees like Joe Cortez and Kenny Bayless can make around $90,000 a year because they usually officiate main events of big ppv events.