From: Serology describes a profile of declining malaria transmission in Farafenni, The Gambia
Year | Reversible catalytic model | Superinfection model | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Varied SRR (average SRR 0.024Â yearâ1; time to become seronegative 42Â years) | Fixed SRR (common SRR 0.028Â yearâ1; time to become seronegative 36Â years) | Varied SRR (average SRR 0.043Â yearâ1; time to become seronegative 23Â years) | Fixed SRR (common SRR 0.049Â yearâ1; time to become seronegative 20Â years) | |||||||||||
SRR (95Â % CI) | SCR (95Â % CI) | % Decrease in SCR since previous survey | % Decrease in SCR since 1988 survey | SCR (95Â % CI) | % Decrease in SCR since previous survey | % Decrease in SCR since 1988 survey | SRR (95Â % CI) | SCR (95Â % CI) | % Decrease in SCR since previous survey | % Decrease in SCR since 1988 survey | SCR (95Â % CI) | % Decrease in SCR since previous survey | % Decrease in SCR since 1988 survey | |
1988 | 0.039 (0.017â0.090) | 0.073 (0.059â0.091) | Â | 0.069 (0.059â0.080) | Â | 0.070 (0.035â0.137) | 0.078 (0.062â0.099) | Â | 0.072 (0.062â0.083) | Â | ||||
1990 | 0.037 (0.023â0.059) | 0.070 (0.055â0.088) | 4 | 4 | 0.062 (0.055â0.071) | 10 | 10 | 0.071 (0.047â0.106) | 0.078 (0.060â0.100) | 0 | 0 | 0.064 (0.046â0.091) | 11 | 11 |
2003 | 0.022 (0.011â0.045) | 0.043 (0.034â0.055) | 39 | 41 | 0.046 (0.040â0.053) | 26 | 33 | 0.038 (0.020â0.073) | 0.046 (0.035â0.060) | 41 | 41 | 0.050 0.036â0.072 | 22 | 31 |
2008 | 0.022 (0.011â0.041) | 0.033 (0.026â0.043) | 23 | 55 | 0.036 (0.031â0.042) | 22 | 48 | 0.036 (0.020â0.064) | 0.036 (0.027â0.047) | 22 | 54 | 0.041 (0.029â0.059) | 18 | 43 |
2011 | ~0 (NA) | 0.019 (0.015â0.024) | 42 | 74 | 0.022 (0.017â0.028) | 39 | 68 | ~0 (NA) | 0.019 (0.015â0.024) | 47 | 76 | 0.024 (0.016â0.037) | 42 | 67 |