As folate is vital in the first trimester of pregnancy for healthy fetal development, the use of antifolates is strongly contraindicated in pregnancy and carries significant teratogenic risk. Low doses of methotrexate can deplete folate stores and cause side-effects that are similar to folate deficiency.
Cause of Adult Mumps. Adult mumps is caused by an infection with the mumps virus, which is found worldwide. The mumps virus is an RNA (ribonucleic acid) virus from the family Paramyxovirus of the genus Rubulavirus. The mumps virus only infects humans.
Mumps is a contagious disease that is spread when infected people cough, sneeze, or talk. Sharing items, like cups or drink cans, with infected people can also spread the virus. The virus can also live on items and surfaces touched by an infected person for several hours.owever, mumps can occasionally cause complications, such as swelling of the brain, testicles (in males), and ovaries and breasts (in females), and temporary or permanent deafness.