Association for Behavior Analysis International

The Association for Behavior Analysis International® (ABAI) is a nonprofit membership organization with the mission to contribute to the well-being of society by developing, enhancing, and supporting the growth and vitality of the science of behavior analysis through research, education, and practice.

16th Annual Autism Conference

Autistic People and Applied Behavior Analysis: Collaboration and Community

Seattle COVID-19 Information


ABAI is closely monitoring CDC guidelines and local recommendations to ensure that attendees have a safe and productive in-person convention experience. Please read carefully below as you plan your trip to Seattle.


Guidelines and recommendations change quickly. We recommend double checking all local guidelines, especially regarding testing requirements, a week before your planned departure.


Regardless of state mandates at the time of the event and vaccination status, all attendees will be required to wear masks while inside the conference center for the duration of sessions.


Updated October 11, 2021

Washington State has reinstated a statewide mask mandate for all individuals, regardless of vaccination status. This includes all indoor public settings like grocery, retail, theaters, and entertainment establishments. This health order affects everyone five years of age and older in public indoor settings and at large, outdoor events with 500 or more attendees, including sporting events, fairs, parades, and concerts. There are some exceptions to the mask requirement, including:


  • Children under five years of age. However, children ages two to four years old can wear a mask under close adult supervision. Children under two years of age should not wear a mask due to the risk of suffocation.
  • People with a medical or mental health condition or disability that prevents them from wearing a mask.
  • Anyone who is working alone, regardless of vaccination status.
  • Verified fully vaccinated workers who are working in an area not accessible to the public.
  • Athletes who play indoor sports and who are actively engaged in competition or practice (masks are still required on sidelines and in team meetings).
  • Small indoor private gatherings and outdoor events with fewer than 500 people, where physical distancing is possible.


Please note: Businesses have the right to set their own rules and regulations for the health and safety of their customers and staff. We kindly ask visitors to determine and adhere to the individual guidelines of each business in Seattle and King County.


Seattle is COVID-19 Ready

To protect customers and workers, preserve hospital capacity, and help prevent business closures, last week Seattle and King County announced that they will require verification of full vaccination status or a negative test to enter outdoor public events of 500 or more people and indoor entertainment and recreational establishments and events such as live music, performing arts, gyms, restaurants, and bars. This is effective October 25, 2021, and applies to all indoor meetings and events occurring regardless of size. This health order ensures that meetings and conventions can continue to convene safely and responsibly—and it provides attendees and travelers added confidence during an otherwise unpredictable time. It also provides an adequate level of flexibility to attendees, providing them an option to show proof of vaccine or proof of a negative COVID-19 test in the last 72 hours. Please review additional details here.


Vaccines and Testing in the City

Specifics on vaccine requirements, acceptable COVID-19 tests, and details on this health order are available at


ABAI will update this information with details on rapid test locations near the hotel in the coming weeks.


Traveling to Seattle


Domestic Travel

Seattle follows the CDC guidelines for traveling. Wearing a mask over your nose and mouth is required for vaccinated and unvaccinated individuals on planes, buses, trains, and other forms of public transportation traveling into, within, or out of the United States and while indoors at U.S. transportation hubs such as airports and bus or train stations. Travelers are not required to wear a mask in outdoor areas of a conveyance (like on open deck areas of a ferry or the uncovered top deck of a bus).


International Travel

Seattle follows the CDC guidelines for international travel. Currently, city businesses are fully open to the public; some may require masks to enter.


Before Arriving in the United States

All air passengers coming to the United States, including U.S. citizens and fully vaccinated people, are required to have a negative COVID-19 test result no more than 3 days before travel, or documentation of recovery from COVID-19 in the past 3 months, before they board a flight to the United States.


After Travel

Get tested with a viral test 3-5 days after travel. Self-monitor for COVID-19 symptoms; isolate and get tested if you develop symptoms. Follow all state and local recommendations or requirements after travel.


The Westin Seattle

Please review here their safe and clean measures, including cancelation policies during the pandemic.


Modifed by Eddie Soh