Here's what you need to know.

"Swine Flu and the Mexico Mystery: Why does the swine flu seem to be more deadly in Mexico?" by David Dobbs. Posted Monday, April 27, 2009.

"Who's Zooming WHO? We must keep the World Health Organization focused on fighting infectious diseases," by Anne Applebaum. Posted Monday, April 27, 2009.

"Pandemic Alert! What happens during a 'public-health emergency,' and what's a 'pandemic alert level'?" by Christopher Beam. Posted Monday, April 27, 2009.

"Stocks Catch Cold on Swine Flu Scare," by Matthew Yeomans. Posted Monday, April 27, 2009.

"Attack of the Swine Flu: U.S. officials declare public-health emergency as worries of global pandemic increase," by Daniel Politi. Posted Monday, April 27, 2009.

We also combed our archives for the following related articles:

"Why Isn't There a Cure-All Influenza Vaccine? Because it wouldn't be safe," by Michelle Tsai. Posted Monday, April 27, 2009.

"Do Surgical Masks Stop Swine Flu? Probably Not," by Jon Cohen. Posted Monday, April 27, 2009.

"Outbreaks vs. Epidemics: Plus, when can the government quarantine its citizens?" by Brendan I. Koerner and Michelle Tsai. Posted Monday, April 27, 2009.