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NEW YORK (TheStreet) — “Swine flu” is a popular search topic following the release of several scientific studies claiming that the H1N1 swine flu could easily mutate into a more transmissible form.

The 2009 H1N1 virus could morph slightly into the Spanish flu, as it once was known, increasing its ability to spread among humans. This strain killed at least 50 million people in the late 1910s, before the virus subsided.

An H2N2, also called Asian influenza, could also re-emerge. This virus was first seen in 1957 when it killed up to 4 million people.

Gary Nobel, a researcher at the Vaccine Research Center of the U.S. National Institutes of Health, believes that everyone should make an effort to proactively seek vaccination, and that health authorities should be prepared with the necessary vaccines in the event of an outbreak.

Chuck Greenberg” is a trending search topic following a report from The Fort Worth Star-Telegram that the Texas Rangers owner is going to resign Friday as CEO in order “to pursue other interests.”

The sport attorney became the managing partner and chief executive of the Major League Baseball team in August 2010.

While the Star-Telegram didn’t know the reason why Greenberg was leaving, it reported that his “method of operations” may have caused disagreements with the team’s president, Nolan Ryan, as well as within the organization.