WAC World Allergy Congress 2027
World Allergy Organization
- Dates
- October 20–23, 2027 Confirmed
- Location
- Florianopolis, Brazil
- Expected attendance
- About 2,500
- Therapy or topic area
- Immunology
About the Meeting
The World Allergy Congress is the international meeting of the World Allergy Organization for allergists, clinical immunologists and allied health professionals. Its scientific programme presents new research in allergy and immunology, alongside educational sessions and opportunities for networking.
Based on the official WAC website.
Key Dates for WAC 2027
| Milestone | Date | Status |
|---|---|---|
| Abstract submission deadline | April 12, 2027 | Estimated |
| Late-breaking abstract deadline | October 4, 2027 | Estimated |
| Abstract notification | June 20, 2027 | Estimated |
| Meeting | October 20–23, 2027 | Confirmed |
Subscribe to all WAC dates
Google Calendar Outlook.com Microsoft 365 Download for Apple / Outlook app (.ics)Planning ahead: WAC's abstract deadline usually falls about 6 months (191 days) before the meeting.
Submitting an Abstract to WAC 2027
- Length
- Title up to 25 words and body up to 250 words, in English. Up to 20 authors and 20 affiliations. 2026 rules
- Tables and figures
- No tables or graphs. References are allowed only within the body text. 2026 rules
- Membership required
- No 2026 rules
- Previously presented work
- Encore abstracts are accepted if they were presented outside Japan, and must be marked as encores. 2026 rules
WAC hasn't published its 2027 guidelines yet. Until it does, items marked 2026 rules show the 2026 requirements. Summarized from WAC's guidelines, checked October 23, 2026. The official guidelines always take precedence.
Common Questions
When is the WAC 2027 abstract deadline?
The abstract submission deadline is April 12, 2027 (estimated), and late-breaking abstracts are due October 4, 2027 (estimated).
When and where is WAC 2027?
WAC 2027 takes place October 20–23, 2027 in Florianopolis, Brazil. The dates are confirmed.
How many people attend WAC?
About 2,500 people are expected at WAC 2027.
How can our team cover WAC efficiently?
harmony Insights turns the full WAC program into a searchable catalog within 24 hours of abstract titles being posted, scored against your scientific interests. See how it works.
Past Editions
| Year | Meeting dates | City | Abstract deadline |
|---|---|---|---|
| 2026 | October 15–18, 2026 | Kyoto. | April 7, 2026 |
| 2025 | February 28 – March 3, 2025 | San Diego | Not recorded |
| 2024 | September 27–29, 2024 | Libson | Not recorded |
| 2023 | December 1–3, 2023 | Bangkok | Not recorded |
Last updated November 12, 2026. Source: Orbytel Group conference database. Dates marked estimated are our projections, not the organizer's.
WAC Abstracts Are Due in 151 Days
The deadline is April 12, 2027 (estimated). Watch WAC and we'll email you before it, whenever its dates change, and when the 2028 deadline is announced.
Attending WAC 2027?
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