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Month August October December February April June Year 1 3+'s 3 LTFU 1+ 10 LTFU 0+ 5 LTFU 1+ 0 LTFU 0+ 0 LTFU 1+

Month

August

October

December

February

April

June

Year 1

3+'s

3 LTFU

1+

10 LTFU

0+

5 LTFU

1+

0 LTFU

0+

0 LTFU

1+

10 LTFU

They want to calculate the incidence rates for year 1. Why don't they count the 80 who tested positive at the start?

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