1. Haemophilus influenzae Type a Infection and Its Prevention -- Jin et al. 75 (6): 2650 -- Infectio...
Haemophilus influenzae Type a Infection and Its Prevention -- Jin et al. 2650 -- Infection and Immunity. infections was caused by type a (Hia) and by type. ...
http://intl-iai.asm.org/cgi/content/full/75/6/2650

2. Health: Influenza Virus Types, Subtypes, and Strains -- Pa Department Of Health
However, the only subtypes of influenza A virus that normally infect people are influenza A subtypes H1N1, H1N2, and H3N2. Influenza B viruses and subtypes ...
http://www.dsf.health.state.pa.us/health/cwp/view.asp?A=178&Q=243064

3. Flu (Influenza) Types - pulmonologychannel -- Pulmonologychannel - Your Pulmonology Community...
Flu (Influenza) Types - pulmonologychannel. Influenza A and influenza B viruses are responsible for most outbreaks of the flu. Changes in influenza A and in...
http://www.pulmonologychannel.com/influenza/types.shtml