Trying to analyze measles data

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RESEARCH I DID MANY YEARS AGO

I'm trying to analyze data that WHO puts out...

here is some on Measles in a town in Peru

*****

During the outbreak, 150 of the 553 Espindola

residents developed clinical cases of measles. Adults accounted for 44.0% of

cases, and were frequently identified as primary

cases. The attack rate among all susceptible people was 45.5% and was

highest (61.2%) for the 16­20 year age group.

Among adults, significant risk factors for developing measles included being

aged 16­20 years (relative risk [RR]=3.06, 95% CI

= 2.08, 4.49) and being male (RR= 1.73, 95% CI = 1.11, 2.71). Among

serologically confirmed cases, 60.7% developed

diarrhoea and 32.1% pneumonia. The overall case-fatality rate was 3.3%, but

reached 19.1% in the 0­23-month age group.

Failure to reach children through either routine immunization or national

campaigns made this community vulnerable to the

severe and extensive impact of measles virus importation.

****

Now 150 residents got measles

44% adults = 66 people by my calculation

Overall case fatality 3.3% = 4.95 people by my calculation

Then they say 19.1% case fatality in 0-23 month age group

They never told then number of cases in that group

Non adults must have been 84 - but how many of those were 0-24 months

Approximately 5 people died in total - they leave out essential information

It had to be under 5 for sure

This is why I don't believe their information as

it is never filled with facts that you can work with