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.
Though NFL referees earn lower yearly salaries than referees in the other major sports leagues, they actually earn a higher per game average. As of 2011, NFL referees were paid an average of around $70,000 per season.Starting officials earn $34,000 annually compared to $120,000 for officials with more than 20 years experience.s of 2011, NFL referees were paid an average of around $70,000 per season. Starting officials earn $34,000 annually compared to $120,000 for officials with more than 20 years experience.