Research Article

An Increased Frequency in HLA Class I Alleles and Haplotypes Suggests Genetic Susceptibility to Influenza A (H1N1) 2009 Pandemic: A Case-Control Study

Figure 1

Selection criteria for both influenza A H1N1/09 patient (INF-P) and contact (INF-C) groups. INF-P: influenza patients; INF-C: influenza contacts; HI: hemagglutination inhibition; RT-PCR: RT-PCR: real-time polymerase chain reaction, also called quantitative PCR (qPCR).