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Measles

Generalities
Agent Measles virus, genus morbillivirus, family paramyxoviridae
Incubation period 10 days (7-18 days, may be to 21 days)
Period of transmissibility 4 days before rash and 4 days after rash onset
Reservoir Humans
Modes of transmission - Person-to-person: direct contact with droplets, rarely indirect contact
- Airborne (if confined place)
Clinical presentation - Febrile maculo-papular rash
- Complications: otitis media (7-9%), pneumonia (1-6%), gastro-enteritis (8%) and dehydration, blindness, convulsions (1/200), encephalitis (1/1000)
- Encephalitis: post-infectious encephalitis 1 week from onset; or acute encephalitis of delayed type weeks and months after onset)
- Long term complication: sub-acute sclerosing pan-encephalitis SSPE, 7 years or more after onset (1/25000 case, and 1/8000 if onset under 2 years old)
- Case fatality: 3-6% in developing countries, 1-3/1000 in developed countries
Resources
Case definition MOPH circular no 11 (2013)
Forms - Rash reporting form
- Rash investigation form
Guideline Measles surveillance guideline: Ar, En, Fr
Data - Weekly report
- Measles 2019
- Measles 2018
- Measles 2017
- Measles 2016
- Measles 2015
- Measles 2014
- Measles 2013
- Measles 2012
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