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Pandemic (H1N1) 2009 Virus Circulating in Pigs, Guangxi, China

Centers for Disease Control and Prevention
Publication Date
DOI: 10.3201/eid1802.111346
  • Letters To The Editor
  • Letter
  • Biology
  • Medicine


Letters.indd LETTERS persistently low-level parasitemia among asymptomatic immigrants is probably higher than previous estimates. Screening for malaria among immigrants long after arrival would help determine if there are any factors that infl uence the development of clinical malaria. Delayed screening could also be particularly relevant in certain risk groups, such as pregnant women and persons who are HIV positive. As a public health measure, such delayed screening could play a role in preventing outbreaks or reintroducing malaria in countries where it has been eradicated. Acknowledgments We thank L. Velásquez for technical assistance and help with the database. Support was provided by the Red de Investigación de Centros de Enfermedades Tropicales (RICET). RD 06/0021/0020. Begoña Monge-Maillo, Francesca Norman, José Antonio Pérez-Molina, Marta Díaz-Menéndez, Jose Miguel Rubio, and Rogelio López-Vélez Author affi liations: Ramón y Cajal Hospital. Madrid, Spain (B. Monge-Maillo, F. Norman, J.A. Pérez-Molina, M. Díaz-Menéndez, R. López-Vélez); and National Centre of Microbiology, Madrid (J.M. Rubio) DOI: References 1. Monge-Maillo B, Jimenez BC, Perez- Molina JA, Norman F, Navarro M, Perez- Ayala A, et al. Imported infectious dis- eases in mobile populations, Spain. Emerg Infect Dis. 2009;15:1745–52. 2. Rubio JM, Post RJ, van Leeuwen WM, Henry MC, Lindergard G, Hommel M. Alternative polymerase chain reaction method to identify Plasmodium species in human blood samples: the semi-nested multiplex malaria PCR (SnM-PCR). Trans R Soc Trop Med Hyg. 2002;96:S199– 204. 9203(02)90077-5 3. Mascarello M, Gobbi F, Angheben A, Concia E, Marocco S, Anselmi M, et al. Imported malaria in immigrants to Italy: a changing pattern observed in north-east- ern Italy. J Travel Med. 2009;16:317–21. 2009.00321.x 4. Monge-Maill

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