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Volume 19, Number 3—March 2013

Dispatch

Swine Influenza in Sri Lanka

Harsha K. K. Perera, Geethani Wickramasinghe, Chung L. Cheung, Hiroshi Nishiura, David K. Smith, Leo L. M. Poon, Aluthgama K. C. Perera, Siu K. Ma, Narapiti P. Sunil-Chandra, Yi Guan, and Joseph S. M. PeirisComments to Author 
Author affiliations: Author affiliations: University of Hong Kong, Hong Kong Special Administrative Region, People’s Republic of China (H.K.K. Perera, C.L. Cheung, H. Nishiura, D.K. Smith, L.L.M. Poon, S.K. Ma, Y. Guan, J.S.M. Peiris); University of Kelaniya, Kelaniya, Sri Lanka (H.K.K. Perera, N.P. Sunil-Chandra); Medical Research Institute, Colombo, Sri Lanka (G. Wickramasinghe); Japan Science and Technology Agency, Kawaguchi, Japan (H. Nishiura); Colombo Municipal Council, Colombo (A.K.C. Perera)

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Figure 1

Distribution of percentage of swine serum samples seropositive for influenza A(H1N1)pdm09 viruses, by month, and number of A(H1N1)pdm09 viruses detected in humans and swine. The left y-axis represents the percentage of swine serum samples positive for A(H1N1)pdm09 virus. The right y-axis represents the number of swine A(H1N1)pdm09 isolated in the study and reverse transcription PCR–positive human A(H1N1)pdm09 detected in Sri Lanka.

Figure 1. . . Distribution of percentage of swine serum samples seropositive for influenza A(H1N1)pdm09 viruses, by month, and number of A(H1N1)pdm09 viruses detected in humans and swine. The left y-axis represents the percentage of swine serum samples positive for A(H1N1)pdm09 virus. The right y-axis represents the number of swine A(H1N1)pdm09 isolated in the study and reverse transcription PCR–positive human A(H1N1)pdm09 detected in Sri Lanka.

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