| Risk of infection and severity of RVGE depend on age |
Risk of infection and severity depend on the number of previous infections |
Risk of infection and severity depends on age and the number of previous infections; short delay between infection and onset of infectiousness |
Risk of infection and severity depends on the number of previous infections |
Following infection, individuals develop full immunity or become susceptible again |
| Temporary immunity following infection |
Temporary immunity following infection |
Temporary immunity following infection |
No period of full immunity following infection |
Probability of developing full immunity depends on the number of previous infections |
| Severe and mild RVGE are tracked separately and vary in infectiousness; asymptomatic infections do not transmit |
After 2 infections, subsequent infections are less infectious and not reported |
After 2 infections, subsequent infections are less infectious and not reported |
After 4 infections, all individuals develop full immunity (that may wane) |
After 4 infections, all individuals develop full immunity (that may wane); asymptomatic infections do not transmit |
| Only severe RVGE cases are reported |
Only severe RVGE cases are reported |
Only severe RVGE cases are reported |
Mild and severe RVGE cases are reported; reporting rate depends on age (<5 or ≥5 years old) |
Mild and severe RVGE cases are reported |
