COOKIE POLICY
Last updated August 11, 2026
This Cookie Policy explains how VAERS Explorer ("Company," "we," "us," and "our") uses cookies and similar technologies to recognize you when you visit our website at https://leafnlp.org ("Website"). VAERS Explorer is a tool for searching, filtering, and visualizing the public CDC/FDA Vaccine Adverse Event Reporting System (VAERS) dataset. This policy explains what these technologies are and why we use them, as well as your rights to control our use of them.
What are cookies?
Cookies are small data files that are placed on your computer or mobile device when you visit a website. Cookies are widely used by website owners in order to make their websites work, or to work more efficiently, as well as to provide reporting information.
Cookies set by the website owner (in this case, VAERS Explorer) are called "first-party cookies." Cookies set by parties other than the website owner are called "third-party cookies." Third-party cookies enable third-party features or functionality to be provided on or through the website, such as security and bot protection.
Why do we use cookies?
We only use cookies that are strictly necessary for our Website to operate. We do not use cookies for advertising, marketing, or behavioral tracking. These essential cookies enable core functionality such as keeping you signed in, protecting account forms, and defending the Site against automated abuse, and the Website cannot function properly without them.
How can I control cookies?
Because we only use strictly necessary cookies, these cannot be disabled without affecting the functioning of the Website. You may set or amend your web browser controls to accept or refuse cookies; however, doing so may prevent certain parts of the Website — such as signing in to your account — from working correctly.
The specific essential cookies served through our Website are described in the table below:
Essential website cookies
These cookies are strictly necessary to provide you with services available through our Website and to use some of its features, such as access to secure areas.
| Field | Details |
|---|---|
| Cookie: authjs.session-token | |
| Purpose | Keeps you signed in to your VAERS Explorer account across pages and visits. |
| Provider | leafnlp.org |
| Type | http_cookie |
| Expires in | 30 days |
| Cookie: authjs.csrf-token | |
| Purpose | Protects sign-in and account forms against cross-site request forgery and malicious actors. |
| Provider | leafnlp.org |
| Type | http_cookie |
| Expires in | Session |
| Cookie: __cf_bm | |
| Purpose | Cloudflare places this cookie on end-user devices to distinguish humans from bots and protect the Site from abuse. |
| Service | Cloudflare |
| Provider | leafnlp.org |
| Type | http_cookie |
| Expires in | 29 minutes |
How can I control cookies on my browser?
As the means by which you can refuse cookies through your web browser controls vary from browser to browser, you should visit your browser's help menu for more information. The following is information about how to manage cookies on the most popular browsers:
What about other tracking technologies, like web beacons?
We do not use web beacons, tracking pixels, or similar tracking technologies on our Website.
Do you serve targeted advertising?
No. We do not use advertising cookies, serve targeted advertisements, or share your data with advertising networks.
How often will you update this Cookie Policy?
We may update this Cookie Policy from time to time in order to reflect, for example, changes to the cookies we use or for other operational, legal, or regulatory reasons. Please therefore revisit this Cookie Policy regularly to stay informed about our use of cookies and related technologies.
The date at the top of this Cookie Policy indicates when it was last updated.
Where can I get further information?
If you have any questions about our use of cookies or other technologies, please email us at [email protected].
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