Complication Frequency in developed countries Susceptible hosts Otitis media 7-9% Children aged less than 2 years Laryngotracheobronchitis Children aged less than 2 years Pneumonia 1-6% Diarrhoea 8% Hepatitis 56-66% in adults, rare in children Adults Febrille seizures 0.5% Children Acute demyelinating encephalomyelitis 1 in 1000 cases Subacute sclerosing panencephalitis 1 in 25 000 cases (all ages) Post measles aged under 2 years (1 in 8000 cases) Measles inclusion body encephalitis Rare Immunocompromised Giant cell pneumonitis Rare Immunocompromised Blindness Rare (common in developing countries) Vitamin A deficient Death 1 per 5000 in United Kingdom