--- title: "Five times in January, South Carolina’s measles crossed the country to Washington" description: "Twenty-six Washington cases traced to one Southern outbreak cut against Health Secretary Kennedy’s talk of a “global outbreak”" author: "Jan Sokol" published: 2026-10-27T22:22:32Z modified: 2026-10-28T07:36:26Z url: https://rews.cc/a/five-times-in-january-south-carolina-s-measles-crossed-the-c-cdf356 language: en tags: ["health", "vaccines", "measles", "cdc", "kennedy", "us"] publisher: "Rews (https://rews.cc)" --- # Five times in January, South Carolina’s measles crossed the country to Washington *Twenty-six Washington cases traced to one Southern outbreak cut against Health Secretary Kennedy’s talk of a “global outbreak”* By Jan Sokol · October 27, 2026 · https://rews.cc/a/five-times-in-january-south-carolina-s-measles-crossed-the-c-cdf356 ## In brief - South Carolina recorded 997 measles cases from October 2025 to March 2026, the largest US outbreak in three decades - Washington traced five separate measles importations linked to South Carolina in about two weeks in January 2026 - The five importations produced 26 cases in Washington, the largest cluster being 14 cases from January 15 to February 17 - Officials credit isolation, quarantine and contact tracing with limiting how far the virus spread - CDC data: 18 of 4,588 US cases in 2026 were among international visitors and 96% were linked to outbreaks, despite Kennedy’s claims It takes the better part of a week to drive from South Carolina to Washington state, and a few hours to fly. Measles needs only one person who doesn’t yet know they are sick. In January 2026, by the count of Washington’s health officials, it made that crossing five separate times in roughly two weeks. The source was well known by then. Between October 2025 and March 2026, South Carolina recorded 997 measles cases, which the CDC’s [*Morbidity and Mortality Weekly Report* called](https://www.cdc.gov/mmwr/volumes/75/wr/pdfs/mm7533-H.pdf) the country’s largest outbreak in three decades. What is new is the detailed account of how that outbreak travelled. [Beth Mole, writing in *Ars Technica*](https://arstechnica.com/health/2026/10/domestic-travel-poses-growing-risk-for-measles-and-a-new-challenge-for-states/), lays out an analysis of Washington’s early-year cases: five importations, each tracked back to its source. ## Five arrivals The first was a Washington resident who had been in South Carolina during the outbreak and broke out in a rash on January 12. One close contact caught it. Genome sequencing showed the virus closely matched samples from South Carolina, [according to CIDRAP’s summary of the report](https://www.cidrap.umn.edu/public-health-alerts/public-health-alerts-report-highlights-5-measles-importations-washington-state). The second time, the virus came with visitors. South Carolina residents travelled to Washington while infectious and went to public places. Four Washington residents who had close contact with them got sick. While contagious, those four went to schools, healthcare facilities and a church. Nine of their contacts fell ill, plus one person exposed in a public place. The cluster grew to 14 cases between January 15 and February 17. The third time, two Washington residents came home from South Carolina and fell ill on January 15 and 16. Nobody else was infected. The fourth was a single traveller who followed isolation and quarantine instructions, and again no other cases followed. The fifth was a Washington resident who had been around sick people while travelling out of state and fell ill on January 19. While contagious, that person visited a school and a healthcare facility, and six close contacts got sick. That cluster, seven cases between January 19 and January 29, sat in the same county as the fourth importation. The genome sequences from five of those cases were nearly identical to South Carolina’s. Add them up and you get 2, 14, 2, 1 and 7: twenty-six people. ## The work no one sees Officials credit the most basic public health work with stopping the virus where it stopped: isolating the sick, quarantining the exposed, and tracing contacts one by one. The CIDRAP summary describes a quick response by local, state and national officials. The fourth case shows what that looks like at its simplest. One person did as they were told, and the chain ended there. This is how a health system mostly succeeds, and nobody notices. A measles case that doesn’t happen makes no news. But the method needs people, time and money, and every infectious person at a school or a church multiplies the number of names someone has to track down. Seen this way, each importation hands a bill to whichever state receives it. ## Two claims from the secretary The analysis also cuts against a line Health Secretary Robert F. Kennedy Jr. likes to repeat. Kennedy, a prominent anti-vaccine advocate, has played down the measles surge and pushed back hard against suggestions that his decades of vaccine misinformation helped drive down vaccination and drive up cases. He has instead said there is a “global outbreak” and that the US is “doing a better job than any country in the world at controlling the measles outbreak.” *Ars Technica* calls both claims false. Dozens of countries have lower case rates than the United States. Canada and Mexico are also seeing big increases, but the US numbers are not being driven by cases from abroad. They are coming from spread inside under-vaccinated American communities. The CDC’s own numbers say the same. As of October 22, [the agency’s measles data page](https://www.cdc.gov/measles/data-research/index.html) counted 4,588 confirmed cases in 2026. Only 18 were among international visitors. Of the total, 4,404 cases, or 96 percent, are linked to outbreaks, and 43 new outbreaks have been reported this year. Of those outbreak cases, 1,384 come from outbreaks that started in 2025, which shows how long last year’s fires have kept burning. A reflection, offered as only that: officials who want to look as if they have things under control tend to describe threats as coming from outside. A global outbreak belongs to nobody. A virus that moves from one American county to another, through schools and clinics and a church, has an address, and the address is at home. ## After South Carolina South Carolina’s outbreak has since been declared over. The road it opened did not close with it. In Pennsylvania an outbreak has now [topped 1,300 cases](https://www.cidrap.umn.edu/public-health-alerts/public-health-alerts-report-highlights-5-measles-importations-washington-state), after it [passed 1,000 earlier this month](https://rews.cc/a/pennsylvania-s-measles-outbreak-passes-1-000-cases-the-worst-ec36a7). The state counts five deaths, more than the national tally the CDC publishes, a gap [examined here last week](https://rews.cc/a/three-measles-deaths-in-washington-s-count-five-in-pennsylva-3a387f). The CDC page lists three deaths in total and notes that the figure is subject to change. Washington stopped at twenty-six because its officials found every link in the chain fast enough. The next state to receive a traveller from Pennsylvania will have to do the same.