Rubella, also known as German measles or 3-day measles, is a mild often exanthematous disease of infants and children that is severe and associated with complications in adults. It is self-limiting disease associated with a characteristic maculopapular rash.
It is caused by a single-stranded RNA virus classified as a togavirus, genus Rubivirus.
Transmission is through airborne or droplets shed from respiratory secretions.
Highly communicable at the onset of the rash, however viral shedding may also occur 5-7 days before, to 5-7 days or more following appearance of the rash.
The incubation period is 14-21 days.
Children under 2 years who received the measles-mumps-rubella-varicella (MMRV) vaccine as a second measles-containing vaccine (MCV) following an MMR vaccine did not have an elevated risk of febrile seizures (FSs), according to an Australian study. The introduction of the MMRV vaccine also increased MCV coverage in Australia.
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Infants with low Apgar scores within the normal range (7–10) are at increased risks of neonatal mortality and morbidity, according to a study in Sweden. Compared with infants with stable Apgar scores of 10, those with a decrease in score from 5–10 minutes are also at higher risk of morbidity.
Maternal exposures to heavy metals vanadium (V), arsenic (As) and lead (Pb) at early pregnancy appear to result in lower maternal free T3 (FT3) and FT3/free T4 (FT4) ratio, which may contribute to reduced birthweight, suggests a recent study.