1990 Elk Grove CA outbreak

M.E. epidemic among teachers and students. |title= |title=== Onset == |title= |title=== Symptoms == |title= |title=== Findings == |title= |title=== Epidemiology == |title= |title=== Prognosis == |title= |title=== See also == |title=*Epidemic myalgic encephalomyelitis |title=*List of myalgic encephalomyelitis and chronic fatigue syndrome outbreaks |title= |title=== Learn more == |title= |title=== References == |title= |title= |title= |title= |title= |title=