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Table 2 Transmission season categories and implied IRS coverage levels

From: Improving the cost-effectiveness of IRS with climate informed health surveillance systems

1

2

3

4

Cases occurring with no intervention

Severity of transmission (actual or predicted)

Years in this category

Implied IRS Coverage Level

0–50,00

Low transmission

1993, 1994

24%

50,001–100,000

Medium transmission

1995

50%

100,001–150,000

High transmission

1997

1998

75%

150,001–200,000

Epidemic

1996

100%