• Technical Conference: 

    15 – 20 May 2022

  • Exhibition: 

    17 – 19 May 2022

Health and Safety Practices

Version: 22 March 2022

CLEO Management is monitoring global, federal, state and local health guidelines in preparation for the 2022 CLEO Conference and Exhibition. This page reflects enhanced safety measures that have been put in place and current rules and expectations. Information on this page will be updated as necessary.

Vaccine and Mask Requirements

  • Vaccinations — PROOF OF VACCINATION* with photo ID is required for all conference attendees, exhibitors, vendors and staff. No exceptions. 
  • Masks — All conference attendees, exhibitors, vendors and staff are required to wear a mask in the San Jose McEnery Convention Center at all times except when actively eating and drinking.
  • Travel Requirements — No current travel advisory or quarantine requirements issued by the state of California.

Note: All non-U.S. citizens must be fully vaccinated to travel to the United States by plane. All air passengers, regardless of vaccination status, must also show a negative COVID-19 test taken no more than one day before travel.

Visa applications can be processed for individuals able to enter the United States.

* Proof of Vaccination

Review the list of validated vaccines from the World Health Organization that have been evaluated to meet the necessary criteria for safety and efficacy.

Valid forms of proof of vaccination include one of the following:

  • Vaccination card issued by the U.S. Centers for Disease Control and Prevention (CDC) or similar documentation issued by another foreign governmental jurisdiction
  • Photo of a vaccination card as a separate document, or stored on a phone or electronic device
  • Documentation of vaccination from a healthcare provider
  • Personal digital COVID-19 vaccine record with a QR code that scans to display name, date of birth, vaccine dates and vaccine type.

The photo ID must match the identity of the bearer and also the name on the vaccination card. Acceptable ID includes driver’s license, passport or other government-issued ID card.

Health and Safety Guidelines

Our Commitment

As CLEO Management, we promise to:

  • Monitor current protocols as determined by the U.S. Centers for Disease Control and Prevention (CDC).
  • Adhere to orders and mask guidance as set forth by the California Department of Health.
  • Work with the San Jose McEnery Convention Center and associated partners to ensure a safe and clean environment in meeting rooms, the exhibit hall and public spaces.
  • All CLEO Management staff supporting the event onsite will be fully vaccinated.

Be Prepared

As an in-person participant, you also play an important role to ensure the health and safety of all attendees.

In Advance of the Conference

  • Get fully vaccinatedBring proof of vaccination with you. The accepted threshold for being fully vaccinated is 14 days after the final dose. 
  • Plan ahead. Use the United States State Department website to understand any travel restrictions from your originating country of departure.
  • Get the right information. Daily updates with information on case rates and vaccination coverage are issued by the California Department of Health. Local information is updated weekly from Santa Clara County, which includes the city of San Jose.
  • Be prepared. When packing for travel, please bring a sufficient supply of masks, hand sanitizer and other items you need to feel protected.
  • Be patient. Guidelines and recommendations change frequently, and CLEO Management will respond and react quickly to those changes.


  • Carry identification and proof of vaccination status with you.
  • Please do not attend sessions, events or the exhibition if you are not feeling well. CLEO will be presented in a hybrid format, which means many technical programs will be available live and online.
  • Wash your hands frequently.
  • Be mindful of other attendees' comfort levels and act accordingly.

About the Venue

The San Jose McEnery Convention Center is the first convention center in Northern California to receive GBAC STAR ™ accreditation. This signifies that the venue has met all requirements established by the Global Biorisk Advisory Council for a safe and responsive facility.

More Questions?

If you have specific questions that are not addressed here, please contact custserv@optica.org. All exhibitor questions should be addressed to exhibits@cleoconference.org.