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.
How Much Does an NFL Referee Make? The average salary that an NFL referee earns per year nests between the sums of $25,000 and $70,000. This is not as much as the referees for others like the NHA and NBA make. The umpires in Major League Baseball make around $141,000 annually. The NBA referees make around $128,000 annually and the NHL officials earn around $139,000 annually.