Rubella

Generalities
Agent	Rubella virus, genus Rubullovirus, family Togaviridae
Incubation period	14-17 days (range 14-21 days)
Period of transmissibility	- 7 days before rash and 4 days after rash onset - From congenital rubella: infants shed the virus for several months after birth
Reservoir	Humans
Modes of transmission	- Person-to-person: direct contact with droplets - Infants with Congenital Rubella Syndrome shed large quantities of virus in their pharyngeal secretions and urine. - Materno-foetal transmission: 90% of infants born to women infected with rubella during the 1st trimester. The risk of transmission is 10-20% by the 16th week, and rare after the 20th week.
Clinical presentation	- Febril maculo-papular rash - Complications: thrombocytopenia (1/3000), post-infectious encephalitis (1/6000), rarely chronic arthritis - Congenital Rubella Syndrome: Congenital malformation as deafness, cataracts, microphtalmia, congenital glaucoma, pigmentary retinopathy, nystagmus, microcephaly, meningo-encephalitis, mental retardation, patent ductus arteious, atrial or ventricular septal defects, other congenital heart disease, purpura, hepatosplenomegaly, jaundice, radiolucent bone disease
Resources
Case definitions	- MOPH circular no 12 (2013): Acquired Rubella - MOPH circular no 45 (2007): Congenital Rubella Syndrome
Forms	- Rash reporting form - CRS reporting form - Rash investigation form - CRS investigation form
Data	- Rubella 2021 - Rubella 2020 - Rubella 2019 - Rubella 2018 - Rubella 2017 - Rubella 2016 - Rubella 2015