Answer 1

1. True. Although accounting for only 2% of bacterial meningitis overall in the US1 Listeria was the aetiological agent in approximately 20% in those aged less than 1 month in 1995.2 It is an important agent to consider in those at the extremes of age and in the immunocompromised as empirical treatment with third generation cephalosporins does not cover Listeria.3

2. False. Immunisation programs against Hib have resulted in …