Figure 1.

Course of an influenza infection within a host. The timings of the adaptive immune response, namely Antibodies (Abs) and cytotoxic T lymphocytes (CTL), for both a primary (PR) and secondary (SR) response to an influenza infection are indicated.

Beauchemin and Handel BMC Public Health 2011 11(Suppl 1):S7   doi:10.1186/1471-2458-11-S1-S7