2011 outbreak

2011 outbreak may refer to:

Tornado outbreaks

 * 2011 Super Outbreak
 * 2011 Hackleburg–Phil Campbell tornado
 * 2011 Tuscaloosa–Birmingham tornado
 * 2011 Philadelphia, Mississippi tornado
 * 2011 Smithville, Mississippi tornado
 * Tornado outbreak of April 14–16, 2011
 * Tornado outbreak sequence of May 21–26, 2011
 * Derecho and tornado outbreak of April 4–5, 2011
 * Tornado outbreak of April 9–11, 2011
 * 2011 New England tornado outbreak
 * Tornado outbreak sequence of April 19–24, 2011
 * Tornado outbreak of June 18–22, 2011
 * Tornado outbreak of November 14–16, 2011

Other uses

 * 2011 Germany E. coli O104:H4 outbreak, a foodborne illness outbreak
 * 2011 dengue outbreak in Pakistan, a dengue fever outbreak in Pakistan
 * 2011 Bulgaria foot-and-mouth disease outbreak, a Bulgaria foot-and-mouth disease outbreak
 * 2011 United States listeriosis outbreak, an outbreak of listeriosis