…        Mumps occurs throughout the world

…        Humans are only host / No known animal reservoirs

…        Transmission is person to person, via airborne respiratory droplets or direct contact with droplets or saliva

…        Endemic year round, peak incidence in late winter and spring

…        Less contagious than measles, but still highly communicable, especially from 3 days before active disease onset to 4 days after

 

 

National Trends:

ÝÝÝÝÝÝÝÝÝÝÝ

…        212,000 estimated cases in 1964; similar numbers in previous years

Most reported cases in 5-9 year old children; 90% of patients under 15 yrs.

 

** 1967 ñ Vaccine introduced

** 1968 ñ Mumps made nationally reportable disease

 

…        After vaccine ñ Caseload drops dramatically

ÝÝÝÝÝÝÝ Down to 3,000 reported cases annually 1983-1985

…        1986 ñ 1987 --Ý Resurgence of mumps ñ up to 12,848 reported cases 1987

ÝÝÝÝÝÝÝ Highest incidence among older school children and college

students (ages 10-19), born before mumps vaccine was

routinely recommended

ÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝ ÝÝÝÝÝÝÝ Outbreaks among highly vaccinated school populations

indicated that single dose does not always prevent

transmission

…        1989 ñ 1999 ñ Drop in reported cases, from 5,712 in 1989 to 352 in 1999

(provisional total)

ÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝ ÝÝÝÝÝ Likely due to 2^nd dose recommendation for MMR vaccine

ÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝÝ ÝÝÝÝÝ Shift in incidence towards older children; 50-80% reported

cases in 5-19 year olds since 1982

 

ÝÝÝÝÝÝÝÝÝÝÝ *Reported Cases of Mumps in Rhode Island, 1993-1998