# Latin America measles outbreak 2025‑2026 > Live situation record from CLSTR: https://clstr.news/situations/measles-outbreak-triggers-expanded-vaccination-and-quarantine-measures-across-central-and-south-amer > Updated: 2026-07-30T23:40:20.000Z. Sources: 124. Developments: 22. By late July 2026 the measles surge across Latin America remains entrenched. Mexico has recorded 12,460 confirmed cases in 2026 and 45 deaths, bringing the cumulative tally since the outbreak began to 19,074. The highest fatality count is in Chihuahua (21 deaths), with Zacatecas, Jalisco, Mexico City and Durango also reporting fatalities. Jalisco leads infections with 6,701 cases, followed by Mexico City. In the Yucatán peninsula, the epidemiological week ended with a modest 3 % rise to 321 cases, largely driven by travel and summer gatherings; Quintana Roo accounts for most of the new infections. Peru’s Arequipa region saw a rapid jump from 88 to 135 confirmed cases within four days, raising suspected cases to 388. Health authorities have expanded school‑based vaccination and opened a dedicated triage unit at the Regional Hospital Honorio Delgado Espinoza. Six additional cases were identified in Campeche among Guatemalan migrant agricultural workers. These are classified as imported, with no evidence of community transmission, and authorities are monitoring up to 200 contacts. The outbreak continues to strain health systems, prompting intensified vaccination campaigns and targeted public‑health messaging throughout the affected countries. ## Timeline ### 2026-07-30: Mexico measles outbreak 2026 kills 45, 12,460 cases reported Mexico's 2026 measles outbreak has caused 45 deaths and 12,460 confirmed cases (188% rise over 2025); Campeche reports six new imported cases among Guatemalan workers, total 16. 7 sources. https://clstr.news/cluster/mexico-measles-outbreak-2026-kills-45-12460-cases-reported ### 2026-07-28: Measles cases surge in Peru's Arequipa region and Mexico's Yucatán peninsula Measles cases rose sharply in Peru's Arequipa region and increased 3% in Mexico's Yucatán peninsula, prompting intensified vaccination efforts. 6 sources. https://clstr.news/cluster/measles-cases-surge-in-perus-arequipa-region-and-mexicos-yucatn-peninsula ### 2026-07-22: Guatemala confronts measles resurgence as vaccination drive cuts cases by 80% Guatemala's measles outbreak risk 4.7 million, 28 deaths; a vaccination drive of 1.4 million doses has cut cases by about 80 %. 3 sources. https://clstr.news/cluster/guatemala-confronts-measles-resurgence-as-vaccination-drive-cuts-cases-by-80 ### 2026-07-19: Ecuador conducts measles vaccination sweep in Cuenca neighborhoods Ecuador’s health ministry surveyed Cuenca after a suspected measles case, sending mobile teams to 263 homes and administering 31 free vaccine doses to complete immunizations. 2 sources. https://clstr.news/cluster/ecuador-conducts-measles-vaccination-sweep-in-cuenca-neighborhoods ### 2026-07-17: Measles cases rise in Mexico and Ecuador prompt health alerts Mexico's Querétaro reports 45 measles cases in 2026, while Ecuador's Cuenca launches surveillance after a suspected case, prompting health alerts in both nations. 3 sources. https://clstr.news/cluster/measles-cases-rise-in-mexico-and-ecuador-prompt-health-alerts ### 2026-07-14: El Salvador and Guatemala measles outbreaks prompt vaccination drives El Salvador confirmed 47 imported measles cases; Guatemala reported over 27 000 cases and 26 deaths, prompting intensified vaccination campaigns in both countries. 2 sources. https://clstr.news/cluster/el-salvador-and-guatemala-measles-outbreaks-prompt-vaccination-drives ### 2026-07-11: Measles outbreak in Mexico and Guatemala tops 27,000 cases, 44 deaths Mexico reports 18,768 measles cases and 44 deaths; Guatemala 27,145 cases and 26 deaths; the US sees 2,170 cases, the highest in 35 years, amid falling vaccination rates. 6 sources. https://clstr.news/cluster/mexico-reports-rising-measles-cases-and-deaths-in-2026 ### 2026-07-01: El Salvador reports imported measles cases as Chile ramps up vaccination outreach El Salvador confirmed 27+ imported measles cases, while Chile started a nationwide outreach to vaccinate over 140 000 children amid rising regional outbreaks. 2 sources. https://clstr.news/cluster/el-salvador-reports-imported-measles-cases-as-chile-ramps-up-vaccination-outreach ### 2026-06-27: Measles vaccination campaigns intensify in Ecuador and Guatemala Ecuador and Guatemala ramp up measles vaccination amid rising cases, with Ecuador deploying mobile brigades and Guatemala reporting nearly 6,000 infections among IGSS members. 2 sources. https://clstr.news/cluster/measles-vaccination-campaigns-intensify-in-ecuador-and-guatemala ### 2026-06-24: Measles Cases Surge in Japan and Latin America as Honduras Ends Travel Vaccine Requirement Measles cases rise in Japan, Peru and El Salvador, while Honduras lifts the travel vaccination proof requirement. 6 sources. https://clstr.news/cluster/el-salvador-measles-cases-reach-23-as-travel-vaccine-rule-ends ### 2026-06-19: Measles cases fall in Michoacán and Edomex as Mexico steps up vaccination Mexico's State of Mexico logged 342 measles cases, ranking sixth nationally, while Michoacán reported no new cases since May 29 after vaccinating 1.46 million people. 3 sources. https://clstr.news/cluster/measles-cases-fall-in-michoacn-and-edomex-as-mexico-steps-up-vaccination ### 2026-06-14: Yucatán reports sharp rise in measles cases and dog‑bite injuries in 2026 Yucatán records 38 measles cases in 2026, up sharply from two a year earlier, and 2,215 dog‑bite injuries, reflecting rising health challenges tied to low vaccination and irresponsible pet ownership. 3 sources. https://clstr.news/cluster/yucatn-reports-sharp-rise-in-measles-cases-and-dogbite-injuries-in-2026 ### 2026-06-13: Peruvian Government Allocates 4 Million Soles to Combat Measles Outbreak Peru's health ministry earmarks 4 million soles for regional measles response as a third university case triggers contact tracing, campus vaccinations and active surveillance. 2 sources. https://clstr.news/cluster/peruvian-government-allocates-4-million-soles-to-combat-measles-outbreak ### 2026-06-09: Mexico measles outbreak reaches 18,157 cases and 41 deaths Mexico reports 18,157 measles cases and 41 deaths, with Jalisco most affected; health authorities urge nationwide vaccination, while Peru advises travelers to get vaccinated. 5 sources. https://clstr.news/cluster/measles-outbreaks-prompt-vaccination-drives-in-peru-and-mexico ### 2026-06-05: Chile health ministry urges measles vaccination for children before overseas travel Chile’s health ministry urged parents to ensure children have two measles vaccine doses before traveling abroad, citing regional outbreaks and gaps in booster coverage among 95,000 children. 2 sources. https://clstr.news/cluster/chile-health-ministry-urges-measles-vaccination-for-children-before-overseas-travel ### 2026-06-03: Chile boosts measles vigilance as vaccination coverage lags in Magallanes Chile warns of measles importation risk while the Magallanes region trails nationally with only 68.5% vaccination coverage for respiratory diseases. 2 sources. https://clstr.news/cluster/chile-boosts-measles-vigilance-as-vaccination-coverage-lags-in-magallanes ### 2026-05-31: Measles cases surge across Latin America, health officials urge vaccination Over 20,000 measles cases have been confirmed in Latin America in 2026, prompting WHO and PAHO to urge vaccination and heightened surveillance, especially in Mexico and Guatemala. 2 sources. https://clstr.news/cluster/measles-cases-surge-across-latin-america-health-officials-urge-vaccination ### 2026-05-25: Arequipa health officials report up to 30 suspected measles cases Arequipa, Peru reports 20‑30 suspected measles cases from 153 clinics; rapid regional lab testing now provides results in 2‑4 hours. 7 sources. https://clstr.news/cluster/arequipa-health-officials-report-up-to-30-suspected-measles-cases ### 2026-05-21: Peru declares measles emergency, prompting heightened surveillance in northern Chile Peru's measles emergency and rising pertussis cases trigger a 90‑day health alert and boost vaccination drives, while Chile ramps up surveillance in its northern border regions. 3 sources. https://clstr.news/cluster/peru-declares-measles-emergency-prompting-heightened-surveillance-in-northern-chile ### 2026-05-17: Peru declares 90‑day health emergency amid measles surge Peru orders a 90‑day emergency to curb a growing measles outbreak across 14 regions, intensifying vaccination. 11 sources. https://clstr.news/cluster/peru-declares-90day-health-emergency-over-measles-outbreak ### 2026-05-12: Cusco school delegation returned from Bolivia, placed under 21‑day quarantine over measles risk A 147‑person Cusco school group stranded in Bolivia returned home and begins a 21‑day measles quarantine. 2 sources. https://clstr.news/cluster/cusco-school-delegation-returned-from-bolivia-placed-under-21day-quarantine-over-measles-risk ### 2026-04-16: El Salvador accelerates measles vaccination; Puno reports first measles case El Salvador expands measles vaccination with 11 imported cases; Peru's Puno reports first case and boosts surveillance. 66 sources. https://clstr.news/cluster/el-salvador-accelerates-measles-vaccination-puno-reports-first-measles-case --- Cite as: Latin America measles outbreak 2025‑2026. CLSTR, https://clstr.news/situations/measles-outbreak-triggers-expanded-vaccination-and-quarantine-measures-across-central-and-south-amer