TY - JOUR AU - Huang, Daniel Tsung-Ning AU - Shao, Pei-Lan AU - Huang, Kuo-Chin AU - Lu, Chun-Yi AU - Wang, Jen-Ren AU - Shih, Shin-Ru AU - Chi, Hsin AU - Lai, Mei-Ru AU - Lee, Chin-Yun AU - Chang, Luan-Yin AU - Huang, Li-Min T1 - Serologic Status for Pandemic (H1N1) 2009 Virus, Taiwan T2 - Emerging Infectious Disease journal PY - 2011 VL - 17 IS - 1 SP - 76 SN - 1080-6059 AB - We studied preexisting immunity to pandemic (H1N1) 2009 virus in persons in Taiwan. A total of 18 (36%) of 50 elderly adults in Taiwan born before 1935 had protective antibodies against currently circulating pandemic (H1N1) 2009 virus. Seasonal influenza vaccines induced antibodies that did not protect against pandemic (H1N1) 2009 virus. KW - Pandemic (H1N1) 2009 KW - viruses KW - influenza KW - neutralization assay KW - hemagglutination inhibition assay KW - serologic assays KW - vaccine KW - Taiwan KW - dispatch DO - 10.3201/eid1701.100014 UR - https://wwwnc.cdc.gov/eid/article/17/1/10-0014_article ER - End of Reference