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 a pro football referee get paid? he new eight-year contract -- the longest ever for officials,  according to the NFL -- gives the union referees a pay bump from   $149,000 a year in 2011 to  $173,000 in â¦ 2013.