American Society of Hematology

Information for International Travelers

As the world’s largest hematology conference, the ASH annual meeting is worth the trip. If you are not a U.S. citizen and are planning to attend the ASH annual meeting, advance planning is critical.

Citizens of some foreign countries will need a visa to enter the United States and attend the ASH annual meeting. Because of U.S. State Department regulations, U.S. embassies and consulates may require a face-to-face interview for most non-immigrant visa applications. Therefore, you should apply for your visa at least three to four months before the annual meeting.

To schedule an interview for the visa application process, please contact the nearest U.S. embassy or consulate. For more information, please visit

Requesting an Invitation Letter From ASH

If you would like to request an invitation letter from ASH for your visa application, you must first register and pay in full for the meeting. To obtain a visa invitation letter, have your registration confirmation number available and visit the visa link in your registration confirmation email.

If you have any questions about this process, please contact

Visa Waiver Program and ESTA Authorization

Effective January 20, 2010, citizens of countries participating in the Visa Waiver Program may be unable to enter the U.S. without Electronic System for Travel Authorization (ESTA) approval from the U.S. government.

For information on participating countries and to apply for ESTA authorization, please visit

Free Wi-Fi at the Annual Meeting

ASH offers free internet access to all meeting attendees throughout the convention center and in adjacent meeting space. Learn more about Wi-Fi at the meeting, including the Wi-Fi zone for 2.4 GHz devices, which are commonly used by international attendees.

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