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.
Healthgrades Editorial Staff. Mumps is an infectious disease caused by a virus that typically leads to painful swelling of the salivary glands in front of and below the ears.Mumps typically occurs in children between the ages of two and 12 years who were not vaccinated against mumps.ealthgrades Editorial Staff. Mumps is an infectious disease caused by a virus that typically leads to painful swelling of the salivary glands in front of and below the ears.