When is registration open?

We anticipate to have the registration open in December 2020.

How do I know if I am eligible to attend?

A description of  who can attend is available on the CROI conference website

How do I obtain my CME certificate from a prior CROI?

If you successfully claimed your CME credits from CROI 2017 to 2020, a copy of your certificate is available in your CROI account. Once you are logged in, click on “View your profile” to retrieve your certificate. You may also email the request to

What is the registration fee to attend?

The registration fee for virtual CROI 2021 is $495 for early rate and $650 after February 18, 2021* Subject to change. 

If you were a CROI 2020 paid registrant, you may be eligible to receive an $200 credit toward CROI 2021, which can be applied toward your registration fee or contributed toward CROI New Investigator Scholarship Fund. If you are eligible for the credit, you will receive an email with details to claim the credit.

How do I reserve a hotel room for CROI 2021?

CROI 2021 will be held virtual, therefore, hotel reservation is not required this year.

How does the registration application process work?

You will need to have an IAS-USA account to start the application process for CROI 2021. If you already have an IAS-USA account, please login and complete the application. If you do not have an IAS-USA account, please create one to start the application. To avoid delays in your application process, please ensure you submit a completed application. Once your application has been submitted, generally you will be notified within 2 or 3 business days with your application decision.

Who can attend the New Investigator Workshop?

The CROI Program Committee Workshop for New Investigators and Trainees is open to all registrants (eg, community educators, international delegates, general attendees).

I cannot access my existing IAS-USA account. Should I create a new account?

No. If you create a new account, you will lose any prior records in your existing account (eg, CME certificates). Instead, please try to recover your existing IAS-USA account. If you cannot log into your existing account because you do not remember your password, use “Reset your password” and follow the instructions. If you no longer have access to the email associated with your existing IAS-USA account, email your full name and institution to for assistance.

I have an existing IAS-USA account but I have a different email address I prefer to use. Can I update my email address?

Yes, you can change the email address associated with your IAS-USA by logging in here. Click on “Settings” and replace the email address in the “Account Email” field to your preferred email address. Click “Save Changes” to complete the process. To change your email address but need assistance, email your full name, email address associated with your existing IAS-USA account, and preferred email address you would like to use to 

I submitted my application to register but have not received any email about the status of my application.

Applications are generally reviewed within 2 or 3 business days. When you submit your application, you should receive “CROI 2021 Application Receipt” email. If you have not received that email, first check your spam folder and add to your safe sender list to ensure you get all future communication for your application and registration. Not submitting completed application can delay the application review process. Make sure to submit requested information about your eligibility to attend the conference (eg, recent publications, describing your role). You can find more information regarding attendee criteria under “Who Can Attend” section.  

I am a CROI 2020 paid registrant. How do I receive my $200 credit?

Email was sent out to CROI 2020 paid registrants, who may be eligible to receive the credit. The email includes CROI 2020 Registration Reference Number, which is needed to receive the credit during the application process or the registration process. If you did not receive this email, please check your spam folder (email was sent to the email address used to register for CROI 2020). If you do not have the CROI Registration Reference Number but you may be eligible to receive the credit, please do not process the payment until you contact to receive the number. This is to prevent having to go through the refund process, which is a lengthy process 

I am a CROI invited participant and my email address, where I receive email communication regarding the conference, is different from my existing IAS-USA. Should I create a new IAS-USA account?

No, if you have access to your existing IAS-USA account, please login here and click on “Settings” and change the email for “Account Email” and click “Save Changes” to complete the change. If you cannot log into your existing account because you forgot your password, please use “Reset your password” to recover your password.  

My employer or assistant is making my registration fee payment. What information do I need to provide them?

In order for you to provide the person who will be making your registration fee payment on behalf of you, you will need to complete your portion of the registration. If you are an applicant and received application approved email notification, please click on the link within the email. This will direct you to the registration process. When you are on the payment page, select either wire transfer or check as your method of payment. You will then receive “CROI 2021 Payment Pending” email notification. Please forward this email to the appropriate person who will be making your payment. If they plan on paying with a credit card, the email notification has a link, which will direct them to the payment page. This link is unique to your record and only your registration record will populate to process the payment.


I have just started graduate school and do not yet have study results. Can I apply for a New Investigator Scholarship with a strong letter of recommendation from my mentor?

Scholarships for New Investigators are given only to those applicants who are the presenting author on an abstract that has been accepted for presentation at the conference. You may apply to attend the conference through the General Registration Application system, and describe your current and expected work. Your application will be reviewed, but you will be required to pay the registration fee if accepted.

How do I obtain my CME certificate from a prior CROI?

If you successfully claimed your CME credits from CROI 2017 to 2020, a copy of your certificate is available in your CROI account. Once you are logged in, click on “View your profile” to retrieve your certificate. You may also email the request to

I am an presenting author on an accepted General Abstract. Can I still apply for the New Investigator or International Investigator Scholarship during Late-Breaker submission?

Scholarship submissions have reopened for Late-Breaker Abstract submission.  Abstract authors applying for the New Investigator or International Investigator Scholarship during Late-Breaker submission must be a submitting a Late-Breaker Abstract in which they are a presenting author.

What is a Community Scholarship, who is eligible, and how do I apply?

CROI invites community leaders who engage in communications and educational activities focused on HIV and—new to virtual CROI 2021—COVID-19 prevention, treatment, or cure research to apply for a CROI Community Scholarship. Recipients of a Community Scholarship award will receive complementary access to the conference, in addition to exclusive access to live and on-demand sessions and networking opportunities tailored toward Community Scholarship awardees, including the Community Breakfast Program.


For more information and how to apply, visit the Community Scholarship page.


How long is the virtual content available?

Unique this year, only registered attendees will have access to the meeting content during and up to 6 months after the conference. Recordings of live and on-demand sessions will be available to nonregistrants approximately 1-month after the conference only through a paid subscription


I am a submitting author and made an spelling error on the name of my coauthor(s). How can I update their information?

The submitting author will need to inform the coauthor(s) to login their CROI profile to update their information. Once the coauthor has updated their information on the profile, the submitting author will need to remove and re-add the coauthor in the submission.

I had a CROI profile prior to CROI 2021. Why am I not able to access my profile?

CROI profiles for the 2021 abstract submission system were reset this year so that updated information could be obtained for authors and coauthors of abstracts. You will need to create a new account on the CROI 2021 Abstract Submission system.

How do I update an author's institution on an abstract submission?

Only the submitting author may make changes to the abstract submission. To update an author’s institution in an abstract submission, the author must be removed and re-added with the correct institution to the submission.

How was my name and contact information added to my CROI profile?

Your name and contact information on your CROI profile appears as it was entered when your profile was created, either by you or a submitting author of an abstract you are listed as coauthor. You may update your profile through the My Account page within the abstract system (

How was my institution added to an abstract submission that I am listed as coauthor?

The institution that appears for you on an abstract submission(s) you are listed as an author is what the submitting author provided, and may not match that on your CROI profile. Any changes to an abstract submission(s) must be made by the submitting author before December 1, at 5:00 PM Pacific Time.

How can I get technical help with the abstract submission site?

For technical assistance with the abstract submission site, email For assistance with abstract content or other questions about CROI, email or call 415-544-9400 between 8:30 AM to 5:30 PM PT.

Will I receive a confirmation email notifying me that my abstract submission was complete?

Yes. The sender for CROI-related emails will be; please add this address to your safe sender list so emails related to the conference are not sent to a spam file.

Why was my abstract declined?

Common reasons for declining an abstract include the following:

  • Subject matter is not appropriate for CROI
  • Information is not new enough
  • Abstract duplicates other submissions
  • Data are not included or offer inadequate/insufficient support for conclusions
  • Statistical evaluation is absent or inadequate
  • Format does not follow guidelines (eg, section[s] missing, more than 1 graphic, table, or figure submitted)
  • Submission is poorly written overall
  • Background does not summarize the hypothesis
  • Methodology is inadequate or insufficient to support conclusions
  • Controls are absent or inadequate
  • Summary of essential results is absent or inadequate
  • Submission reports clinical trial data from unplanned analysis or incomplete or ongoing studies

Can trials in progress be submitted to CROI?

Abstract submissions need to describe the precise findings of the study; promise of results “to be determined” or trials in progress are not acceptable. For more information, visit the Abstract Guidelines and Submission page.

How can I make a change on my abstract or author list now that the submission period is closed?

Once the general or late-breaking abstract processes have closed, NO CHANGES can be made, unless changes or clarification are specifically requested by the abstract review team. Once the submission process ends, the abstracts enter the peer review and scoring process. Each abstract is scored independently by a team of 5 to 9 experts in the particular field, and final scores are reviewed by the team to determine disposition.

What is the copyright policy?

By submitting your abstract to CROI, you are transferring all copyright ownership of the abstract, including all rights incidental thereto, to the CROI Foundation in the event that the abstract is accepted and published by the CROI Foundation. For US federal employees, work conducted on an abstract while the author(s) were employed by the US federal government is not protected by the Copyright Act and there is no copyright, thus ownership cannot be transferred. The contents of the CROI Program and Abstracts eBook are protected by copyright. We require that permission to replicate or reproduce any part of a CROI abstract be obtained from the CROI Organizer; however, study data are the property of the author(s) and study sponsors as relevant. For more information, please email

Do all authors need to approve the content of the abstract submission?

Yes, it is the responsibility of the abstract submitter to ensure that all coauthors have reviewed and approved the content of the abstract and their inclusion in the list of authors before the abstract is submitted. See the Abstract Guidelines page for more information.

Continuing Medical Education (CME)

How do I obtain my CME credits or a certificate of participation for CROI?

Obtaining CME credits will require that you complete an online evaluation of the activity. Following the completion of the conference, a link to the evaluation form and a posttest will be activated in your IAS–USA account under “My Activities”.

A certificate will then be available for you to print. You can also view your certificate from your IAS–USA account under My Activities. Find the relevant activity in the table and, in the far-right column, click on the green sunburst icon (✺) to print your certificate. Submit the claim form no later than 30 days after the date of the activity.

CROI Affiliated Activities

How to apply for CROI affiliated and proximate activities?

CROI 2021 will be virtual. This year’s Affiliated and Proximate Activities will follow the same guidelines as prior years, except submitting an application for approval will not be necessary given that physical meeting space is not requested. We trust that all interested parties will comply with the same guidelines outlined in Affiliated and Proximate Activities page.

Job Posting

Where can I announce or distribute job opening?

Please use the job posting board on the Virtual Platform. It is available under “Connect with Colleagues” tab and then select “Chat by General Topics” and click on “Job Postings”.