It has been observed that earthquakes can impact the local and regional seismicity far from the source region. In 2002, the M7.9 Denali Earthquake triggered an increase in seismicity in several regions in the United States, in some places for over three weeks. In order to see if there was a correlation between the M9.0 Tohoku-Oki, Japan earthquake and triggered seismicity locally and/or regionally, Dr. Hector Gonzalez-Huizar and Dr. Aaron Velasco did a global search for events that occurred after the passage of the surface waves from the 2011, M9.0, Tohoku-Oki, Japan Earthquake. Although they did not find evidence of an overall increase in global seismicity after the event, they did identify several places, including China, Ecuador, and Cuba, where the seismic waves from the Tohoku-Oki earthquake potentially triggered seismicity. Additionally, they observed a potential case of delayed triggering by teleseismic waves of larger ~M5.0 earthquakes in Baja California, Mexico.
For more details about their results, check out the article here.