Warning Alert

COVID-19 transmission continues in Mexico in October 2020; Baja California Sur remains most at risk. Maintain basic health precautions. 

Alert Begins 01 Oct 2020 02:29 PM UTC
Alert Expires 01 Dec 2020 11:59 PM UTC


  • Incident: Coronavirus disease (COVID-19); local transmission
  • Location(s): Nationwide, especially Baja California Sur
  • Period: February-October 2020
  • Cases: 743,216
  • Transmission: Respiratory (coughing, sneezing, speaking)


According to data through Sept. 30, Mexican authorities have reported 743,216 confirmed coronavirus disease (COVID-19) cases since February. Cases have been reported nationwide, with Baja California Sur State reporting the highest incidence of active cases, followed by Mexico City. This represents the complete data available as of Oct. 1.


Background and Analysis
The US CDC maintains a "Warning-Level 3" travel health notice for the global COVID-19 pandemic. This is the highest of three levels and indicates US authorities recommend avoiding all nonessential travel. Furthermore, older individuals and people of any age with chronic medical conditions or otherwise compromised immunity should consider postponing nonessential travel, including domestic travel, and take special precautions to avoid becoming ill, especially where sustained community transmission of COVID-19 has been identified. Individuals should self-isolate for 14 days upon returning from travel.

Older individuals and those with chronic illness are more susceptible to infection and are at increased risk for severe complications. Human-to-human transmission does occur, primarily through respiratory droplets from infected individuals or contact with contaminated surfaces or objects.

Coronavirus disease 2019 (COVID-19) is a viral respiratory disease caused by infection with the SARS-CoV-2 virus (previously known as 2019-nCoV). Symptoms occur 1-14 days following exposure (average of 3-7 days). These symptoms include fever, fatigue, cough, difficulty breathing, sometimes worsening to pneumonia and kidney failure - especially in those with underlying medical conditions.


Emphasize basic health precautions, especially frequent handwashing with soap and water, or an alcohol-based hand sanitizer if soap and water are unavailable. Practice good coughing/sneezing etiquette (i.e., covering coughs and sneezes with a disposable tissue, maintaining distance from others, and washing hands). There is no evidence that the influenza vaccine, antibiotics, or antiviral medications will prevent this disease, highlighting the importance of diligent basic health precautions.

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