Are You Legally Required to Tell Someone You Have Herpes in California?
July 7, 2026 | Nafiz M. Ahmed
Learning that a medical condition could have legal consequences can be unsettling. Questions about herpes disclosure often arise after a disagreement between former partners or when someone learns they are being investigated. While California law does address certain situations involving communicable diseases, criminal liability depends on the specific facts of the case rather than a simple diagnosis alone.
Understanding when herpes disclosure may become a legal issue can help you better understand your rights and avoid common misconceptions about California law.
When Can Herpes Disclosure Become a Legal Issue in California?
California law does not make every instance of herpes nondisclosure a sex crime. Legal issues can arise in limited situations involving allegations that someone knowingly exposed another person to a communicable disease under circumstances prohibited by law.
Whether criminal liability exists depends on the facts of the case. Prosecutors generally must prove more than simply showing that someone has herpes.
Elements the Prosecution Must Prove
When criminal charges are filed, prosecutors carry the burden of proving every required element beyond a reasonable doubt.
Knowledge
The prosecution generally must show that the accused knew they had the condition before the alleged conduct occurred. A person who was unaware of their diagnosis or had no reason to believe they were infected may have different legal considerations.
Intentional or Willful Conduct
It is not enough to suggest that someone exercised poor judgment. Prosecutors typically must present evidence that the alleged conduct was intentional or otherwise met the legal standard required under the applicable law.
Failure to Disclose and Conduct Exposing Another Person
The prosecution must also establish a connection between the alleged failure to disclose and the conduct that gave rise to the alleged legal violation. Every case depends on its own facts, evidence, and witness testimony.
Because these cases often involve conflicting accounts, the available evidence can play a significant role in the outcome.
What Are the Penalties for Criminal Charges Involving Herpes Disclosure in California?
The potential consequences depend on the specific charge, the facts of the case, and the applicable California law. In some situations, allegations involving communicable diseases may be prosecuted as misdemeanors.
Potential consequences may include:
- County jail
- Fines
- Probation
- A criminal record upon conviction
In addition to criminal penalties, some situations may also give rise to civil disputes between the individuals involved.
Can Text Messages or Online Messages Be Used as Evidence?
Many people are surprised to learn that electronic communications often become an important part of these cases.
Depending on the circumstances, prosecutors or defense attorneys may review:
- Text messages
- Emails
- Social media conversations
- Dating app communications
- Medical records, when legally available
These records may help establish what was discussed, whether disclosure occurred, or whether allegations are supported by the available evidence.
Possible Defenses to Criminal Charges Involving Herpes Disclosure
Being accused of a crime does not automatically mean you will be convicted. Depending on the circumstances, several legal defenses may be available.
Possible defenses may include:
- Lack of knowledge of the diagnosis
- Insufficient evidence
- False allegations
- Lack of intent
- Constitutional issues during the investigation
The most appropriate defense depends on the specific facts and evidence involved in each individual case.
Contact a California Sex Crimes Attorney at Ahmed & Sukaram Criminal Defense Attorneys for a Confidential Case Review Today
Allegations involving herpes disclosure can affect your reputation, your privacy, and your future. Ahmed & Sukaram, Criminal Defense Attorneys, represent individuals facing a wide range of criminal allegations throughout California and understand the sensitive nature of these cases.
For more information, please contact our criminal defense law firm of Ahmed & Sukaram, Criminal Defense Attorneys at the nearest location for a consultation.
Ahmed & Sukaram, Criminal Defense Attorneys – San Jose Office
1625 The Alameda, Suite 405, San Jose, CA 95126
(408) 217-8818
Ahmed & Sukaram, Criminal Defense Attorneys – Redwood City Office
600 Allerton St Suite 201G, Redwood City, CA 94063
(650) 299-0500