NJDOH Warns of Potential Measles Exposure in Morris County

New Jersey health officials are warning Morris County residents of potential measles exposure following an encounter with an out-of-state visitor, NBC10 Philadelphia reported.

The New Jersey Department of Health (NJDOH) issued the alert after identifying specific windows of time and locations where individuals may have come into contact with the highly contagious virus. While no additional cases have been identified as of November 13, 2026, the window for potential symptom onset remains open for several weeks.

Health authorities are tracking the exposure through several specific sites in the Morris County area. Anyone who visited these locations during the following times is urged to monitor their health:

New Jersey health officials warn of potential measles exposures at Walgreens, LegionsCon — Eyewitness News ABC7NY

Hanover Marriott (LegionsCon): 1401 NJ-10 E, Whippany, NJ, on Nov. 6, 2026, from 8:50 a.m. to 11 a.m., and on Nov. 7, 2026, from 10 a.m. to 6:30 p.m.
Sonesta Simply Suites Parsippany Morris Plains: 100 Candlewood Drive, Morris Plains, NJ, from 9 p.m. on Nov. 6, 2026, to 12 p.m. on Nov. 7, 2026, and again from 5:45 p.m. on Nov. 7, 2026, to 12:45 a.m. on Nov. 11, 2026.
Walgreens Pharmacy: 203 South Street, Morristown, NJ, on Nov. 7, 2026, from 4:40 p.m. to 7:40 p.m.
Atlantic Health Morristown Medical Center (Emergency Department): 100 Madison Avenue, Morristown, NJ, from 10:50 p.m. on Nov. 10, 2026, to 1:30 a.m. on Nov. 11, 2026.

The biological timeline of the virus means that even those who feel fine today cannot be certain of their status immediately. The New Jersey Department of Health said that potentially exposed individuals could develop symptoms as late as Dec. 4, 2026.

Measles typically presents with a high fever, cough, runny nose, and watery red eyes, often followed by a distinctive rash. Because the virus is so easily transmitted through the air, the risk extends beyond those directly in contact with an infected person to anyone sharing the same indoor spaces during the exposure windows.

Possible measles exposure in New Jersey — CBS New York

If you suspect you have been exposed or are feeling ill, officials advise calling your local health department or healthcare provider before physically arriving at a medical facility. This precaution allows clinics to prepare for your arrival and prevents further potential spread within waiting rooms.

Public health officials are using this incident to remind the community of the importance of staying current with routine immunizations. The NJDOH emphasizes that the measles, mumps, and rubella (MMR) vaccine is the primary defense against these outbreaks.

Data from health agencies shows that receiving two doses of the MMR vaccine is 97% effective at preventing infection, as well as preventing the more severe complications associated with the disease. This high level of efficacy is why widespread vaccination is considered the cornerstone of preventing community-wide outbreaks.

While some debate exists regarding the necessity of broad public health mandates, the economic and social costs of an uncontrolled measles outbreak—including hospitalizations and school closures—often present a heavy burden on local municipalities. In this instance, the focus remains on individual vigilance and the efficacy of existing preventative measures.

Officials continue to investigate the Morris County exposure and are monitoring for new cases.