Epidemiology of Serotype 1 Invasive Pneumococcal Disease, South Africa, 2003–2013
Claire von Mollendorf
, Stefano Tempia, Cheryl Cohen, Susan Meiring, Linda de Gouveia, Vanessa Quan, Sarona Lengana, Alan Karstaedt, Halima Dawood, Sharona Seetharam, Ruth Lekalakala, Shabir A. Madhi, Keith P. Klugman, Anne von Gottberg, and for the Group for Enteric, Respiratory, and Meningeal Disease Surveillance in South Africa (GERMS-SA)
Author affiliations: National Institute for Communicable Diseases, Johannesburg, South Africa (C. von Mollendorf, C. Cohen, S. Tempia, S. Meiring, L. de Gouveia, V. Quan, S. Lengana, S.A. Madhi, K.P. Klugman, A. von Gottberg); University of the Witwatersrand, Johannesburg (C. von Mollendorf, C. Cohen, A. Karstaedt, S. Seetharam, S.A. Madhi, A. von Gottberg); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (S. Tempia), and Pretoria, South Africa (S. Tempia); Chris Hani Baragwanath Academic Hospital, Johannesburg (A. Karstaedt, S. Seetharam); Pietermaritzburg Metropolitan Hospital, Pietermaritzburg, South Africa (H. Dawood); University of KwaZulu-Natal, Pietermaritzburg (H. Dawood); National Health Laboratory Service, Johannesburg (S. Seetharam); National Health Laboratory Service, Polokwane, South Africa (R. Lekalakala); University of Limpopo, Polokwane (R. Lekalakala); Emory University, Atlanta, Georgia, USA (K.P. Klugman)
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Figure 3
Figure 3. Serotype 1 invasive pneumococcal disease clusters by district, South Africa. A) May 2003–December 2004. B) September 2008–April 2012. Gray borders indicate district boundaries; black borders indicate provincial boundaries. Provinces: EC, Eastern Cape; FS, Free State; GP, Gauteng; KZN, KwaZulu-Natal; LP, Limpopo; MP, Mpumalanga; NC, Northern Cape; NWP, North-West; WC, Western Cape. District relative risk was calculated by dividing the observed number of cases per district by the number of cases expected by district (as determined on the basis of numbers in control groups).
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