[lemma=□]
[lemma=mumps]
Some think that a paramyxovirus could be an aggravating factor : '' The coronavirus is the primary cause of the disease , '' said Pr Peiris , adding that another virus , of the family that causes mumps or measles , may also be involved and increase the severity of the disease . These topics are covered in other articles ( eg , see in the Pediatrics section Measles , Mumps , Cytomegalovirus Infection , and Rubella . The following vaccines may not work as well if you receive them shortly after your tetanus shot : Measles , mumps , rubella ( MMR ) , or polio . " Paul works on the mumps virus and explains that because viruses are so small , they only carry the genes for important proteins .