Swine Flu: Mexico may have had 23,000 cases by April 23, the day it announced the epidemic.

YAHOO: The analysis in Science suggests there are many more cases than those confirmed by laboratories — anywhere from 6,000 to 32,000 cases in Mexico as of April 23. The flu has since spread around the world, and the study said it appears to be substantially more contagious than normal, seasonal flu.
The researchers said the 2009 H1N1 flu appears to be about equal in severity to the flu of 1957 and less severe than the deadly 1918 version.

SHOOT: I have been saying for some time that media reports as to number of infections and deaths are probably wildly incorrect. The real number is likely to be several orders of magnitude higher. This strain is guesstimated to have a kill rate of between 0.4 and 1.4%. Thus if you get Swine Flu, the present strain at any rate, you have a 1/100 chance of not surviving it.

clipped from news.yahoo.com MEXICO CITY – Mexico welcomed millions of children back to school Monday with masks, thermometers and globs of hand sanitizer, as scientists estimated that the new strain of swine flu could have sickened 23,000 people before anyone realized it was an epidemic. At least 61 people have been killed by swine flu around the world, and the World Health Organization has confirmed 4,800 cases, including the first in mainland China. China scrambled Monday to find and quarantine more than 200 people on the infected man's flight from the U.S., though the University of Missouri campus where he had been studying planned no special precautions.