The MMWR weekly May 1, 2009 / Vol. 58 / No. 16 includes:
– Update: Swine-Origin Influenza A (H1N1) Virus — United States and Other Countries

– Update: Infections With a Swine-Origin Influenza A (H1N1) Virus — United States and Other Countries, April 28, 2009

– Update: Drug Susceptibility of Swine-Origin Influenza A (H1N1) Viruses, April 2009

– Update: Swine Influenza A (H1N1) Infections — California and Texas, April 2009