What is WHO criteria for High endemicity for meningococcal disease include - and explain in detail?
WHO Classification of Meningococcal areas:

Low endemicity: < 2 cases per 100,000 population per year
Moderate endemicity: 2-10 cases per 100,000 population per year
High endemicity: > 10 cases per 100,000 population per year (0.01%)
Epidemic: > 100 cases per 100,000 population per year (0.1%)