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icon for CDC issues Level 4 warning by December 31?
Climate & Science·Pandemics

CDC issues Level 4 warning by December 31?

icon for CDC issues Level 4 warning by December 31?
Climate & Science·Pandemics

CDC issues Level 4 warning by December 31?

Dec 31

Dec 31

23% chance
Polymarket

$71,397 Vol.

23% chance
Polymarket

$71,397 Vol.

This market will resolve to "Yes" if the CDC issues a Level 4 (“Avoid All Travel”) Travel Health Notice for any disease by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No". A Level 4 notice listed for any amount of time during this market’s timeframe will suffice for a "Yes" resolution. The primary resolution source for this market will be the CDC’s official Travel Health Notices page (https://wwwnc.cdc.gov/travel/notices); however, a consensus of credible reporting will also be used.Trader consensus favors "No" at 77% implied probability, reflecting the complete absence of active CDC Level 4 "Avoid All Travel" Travel Health Notices and no recent escalations to this extreme category for any disease. Official CDC surveillance as of mid-May 2026 confirms zero Level 4 designations, with recent activity limited to Level 2 enhancements, such as new chikungunya alerts in Mauritius and dengue warnings across 16 countries amid rising imported cases. A multi-country hantavirus cluster linked to cruise ship travel prompted a Health Alert Network advisory but fell short of travel notice criteria. Ongoing H5N1 avian influenza monitoring shows no human-to-human transmission, while polio and measles upticks remain at lower precaution levels. Level 4 thresholds demand widespread life-threatening risks to travelers, rare outside major pandemics; weekly FluView and WHO updates through December will gauge any shifts in epidemiological trends.

This market will resolve to "Yes" if the CDC issues a Level 4 (“Avoid All Travel”) Travel Health Notice for any disease by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No".

A Level 4 notice listed for any amount of time during this market’s timeframe will suffice for a "Yes" resolution.

The primary resolution source for this market will be the CDC’s official Travel Health Notices page (https://wwwnc.cdc.gov/travel/notices); however, a consensus of credible reporting will also be used.
Volume
$71,397
End Date
Dec 31, 2026
Market Opened
Jan 19, 2026, 3:15 PM ET

Resolver

0x65070BE91...
This market will resolve to "Yes" if the CDC issues a Level 4 (“Avoid All Travel”) Travel Health Notice for any disease by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No". A Level 4 notice listed for any amount of time during this market’s timeframe will suffice for a "Yes" resolution. The primary resolution source for this market will be the CDC’s official Travel Health Notices page (https://wwwnc.cdc.gov/travel/notices); however, a consensus of credible reporting will also be used.
This market will resolve to "Yes" if the CDC issues a Level 4 (“Avoid All Travel”) Travel Health Notice for any disease by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No". A Level 4 notice listed for any amount of time during this market’s timeframe will suffice for a "Yes" resolution. The primary resolution source for this market will be the CDC’s official Travel Health Notices page (https://wwwnc.cdc.gov/travel/notices); however, a consensus of credible reporting will also be used.Trader consensus favors "No" at 77% implied probability, reflecting the complete absence of active CDC Level 4 "Avoid All Travel" Travel Health Notices and no recent escalations to this extreme category for any disease. Official CDC surveillance as of mid-May 2026 confirms zero Level 4 designations, with recent activity limited to Level 2 enhancements, such as new chikungunya alerts in Mauritius and dengue warnings across 16 countries amid rising imported cases. A multi-country hantavirus cluster linked to cruise ship travel prompted a Health Alert Network advisory but fell short of travel notice criteria. Ongoing H5N1 avian influenza monitoring shows no human-to-human transmission, while polio and measles upticks remain at lower precaution levels. Level 4 thresholds demand widespread life-threatening risks to travelers, rare outside major pandemics; weekly FluView and WHO updates through December will gauge any shifts in epidemiological trends.

This market will resolve to "Yes" if the CDC issues a Level 4 (“Avoid All Travel”) Travel Health Notice for any disease by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No".

A Level 4 notice listed for any amount of time during this market’s timeframe will suffice for a "Yes" resolution.

The primary resolution source for this market will be the CDC’s official Travel Health Notices page (https://wwwnc.cdc.gov/travel/notices); however, a consensus of credible reporting will also be used.
Volume
$71,397
End Date
Dec 31, 2026
Market Opened
Jan 19, 2026, 3:15 PM ET

Resolver

0x65070BE91...
This market will resolve to "Yes" if the CDC issues a Level 4 (“Avoid All Travel”) Travel Health Notice for any disease by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No". A Level 4 notice listed for any amount of time during this market’s timeframe will suffice for a "Yes" resolution. The primary resolution source for this market will be the CDC’s official Travel Health Notices page (https://wwwnc.cdc.gov/travel/notices); however, a consensus of credible reporting will also be used.

Beware of external links.

Frequently Asked Questions

"CDC issues Level 4 warning by December 31?" is a prediction market on Polymarket where traders buy and sell "Yes" or "No" shares based on whether they believe this event will happen. The current crowd-sourced probability is 23% for "Yes." For example, if "Yes" is priced at 23¢, the market collectively assigns a 23% chance that this event will occur. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "CDC issues Level 4 warning by December 31?" has generated $71.4K in total trading volume since the market launched on Jan 19, 2026. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "CDC issues Level 4 warning by December 31?," simply choose whether you believe the answer is "Yes" or "No." Each side has a current price that reflects the market's implied probability. Enter your amount and click "Trade." If you buy "Yes" shares and the outcome resolves as "Yes," each share pays out $1. If it resolves as "No," your "Yes" shares pay $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current probability for "CDC issues Level 4 warning by December 31?" is 23% for "Yes." This means the Polymarket crowd currently believes there is a 23% chance that this event will occur. These odds update in real-time based on actual trades, providing a continuously updated signal of what the market expects to happen.

The resolution rules for "CDC issues Level 4 warning by December 31?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.