<Li> Phase: Pre-pandemic <Ul> <Li> Reduce opportunities for human infection </Li> <Li> Strengthen the early warning system </Li> </Ul> </Li> <Ul> <Li> Reduce opportunities for human infection </Li> <Li> Strengthen the early warning system </Li> </Ul> <Li> Reduce opportunities for human infection </Li> <Li> Strengthen the early warning system </Li>

Avian flu (1997) is a special concern for all but which of the following