Mononucleosis, often called "mono" or the "kissing disease," is a viral infection caused by the Epstein-Barr virus (EBV). It spreads through saliva, which is why it is common among teenagers and young adults who share drinks, utensils, or engage in close contact. One of the biggest concerns people have after being exposed to someone with mono is how soon symptoms will appear. Understanding the incubation period, symptoms, and contagious timeline can help you take the proper precautions.
For same-day mono testing and symptom relief, visit the walk-in clinic at AFC Urgent Care Clark. Our board-certified medical providers are here 7 days a week to provide the highest quality of care. No appointment is required– simply walk-in or plan your visit below!
How Long Does it Take for Symptoms of Mono to Show Up?
Mono has a more extended incubation period compared to many other viral infections. After exposure to the virus, it usually takes four to six weeks for symptoms to develop. This delay can make it hard to pinpoint when and where you were exposed. In some cases, especially in children or individuals with stronger immune systems, symptoms may appear sooner or be so mild that they go unnoticed.
What Are the Symptoms of Mono?
Once mono symptoms appear, they can range from mild to severe and may linger for weeks. The most common signs include:
- Severe fatigue: Feeling unusually tired that doesn't improve with rest.
- Sore throat: Often mistaken for strep throat and may come with white patches on the tonsils.
- Swollen lymph nodes: Particularly in the neck and under the arms.
- Fever and chills: Moderate to high fever can accompany other symptoms.
- Swollen spleen: Some people may experience discomfort or pain in the upper left side of the abdomen.
- Headaches and body aches: General feelings of being unwell.
These symptoms can last for two to four weeks, although the fatigue may continue for months in some cases.
How Long Are You Contagious with Mono?
One of the challenges with mono is that you can be contagious before, during, and even after symptoms appear. People are most infectious during the first few weeks of illness when symptoms are at their peak. However, the virus can remain in your saliva for months, meaning you could unknowingly spread it even after you feel better. Because of this, it's important to avoid sharing drinks, utensils, or engaging in close contact that can spread saliva until your doctor says it's safe.
Get Same-Day Mono Testing and Care at AFC Urgent Care Clark in Clark, NJ
If you've been exposed to mono and start experiencing extreme fatigue, swollen glands, or a persistent sore throat, it's a good idea to seek medical care. While mono usually improves with rest and fluids, complications such as a swollen spleen, dehydration, or severe throat swelling may require urgent medical attention. Visiting urgent care ensures that you receive the proper tests, treatment, and guidance to recover safely and prevent the spread of the virus to others. At AFC Urgent Care Clark, our medical team is available 7 days a week to treat your symptoms– with no appointment required. Our providers specialize in providing preventive and immediate care for patients of all ages. We accept most health insurance plans and offer cost-effective options for any self-paying patient. If you have any additional questions about the services we provide, please contact us directly at (732) 301-5114.
