A devastating mystery illness has gripped Cuba, pushing its healthcare system to the brink and sparking concerns of a potential cover-up by the government. The symptoms are varied and severe, ranging from high fevers and red spots to peeling skin and swollen joints, leaving the population in a state of uncertainty and fear.
The situation has become so dire that the Canadian government has implemented health screenings and quarantine measures for those returning from Cuba, while Spain has advised its citizens to avoid the country due to a "serious epidemic."
Known simply as "the virus" to many, reports indicate that a significant portion of Cuba's population, approximately one-third, has been infected. The British Medical Journal has described this surge as the country's most critical crisis in recent decades. As of December 17th, official reports stated 52 deaths from the virus, with most victims being children, and over 38,000 suspected cases of the disease.
However, numerous Cubans believe the actual numbers are much higher than what the state is willing to admit. Manuel Cuesta Morúa, a prominent human rights activist in Havana, claims that the outbreak began in Matanzas around five months ago, with sudden deaths occurring. He alleges that the government has been hiding these figures by issuing death certificates that do not mention the virus, instead attributing them to "natural causes."
As the virus continued to spread, the regime maintained its silence. By late October, health officials reported 13,000 new fever cases across the country within a week. Cemeteries in areas like Camagüey and Holguín have reportedly been overwhelmed, unable to keep up with the demand.
Three months after the disease's initial spread, the Cuban government finally acknowledged the crisis as an epidemic. Yet, they still refused to declare a national health emergency.
The disease has been described as a "combined arbovirus," where individuals are infected with multiple viruses simultaneously, making diagnosis challenging. It is believed to encompass dengue, Oropouche, and Chikungunya, along with other infectious respiratory viruses such as H1N influenza, respiratory syncytial virus, and Covid-19.
Dengue, for instance, causes fever, severe headaches, eye pain, and rashes, with more severe cases leading to shock, breathing difficulties, severe bleeding, and organ complications. Chikungunya, a mosquito-borne infection, presents with fever and intense, debilitating joint pain that can persist for months or even years.
Cuban officials, however, insist that these diseases are common for the islanders and are neither new nor rare. Public Health Minister José Ángel Portal Miranda stated in October, "They are neither new, nor are they rare or unknown." He further dismissed any speculation of a cover-up, claiming, "No one can hide an epidemic or the dead."
While dengue has been endemic in Cuba for two decades, with several thousand infections recorded annually, Chikungunya had barely been detected previously. In Havana, a popular tourist destination, Chikungunya infections have become increasingly common, with many tourists arriving from southern Florida, especially Miami.
The Florida Department of Health confirmed 149 cases of Chikungunya among individuals who had traveled to Cuba. The situation in Cuba is dire, with a profound collapse of essential services.
Michael Lima, director of the rights-focused NGO Democratic Spaces, who works closely with Cuban human rights activists on the island, described the epidemic as not just an "isolated emergency," but a symptom of more sinister issues that have been "developing for years."
He explained, "The country is facing a profound collapse of essential services. Chronic failures of the electrical grid, widespread shortages of food and medicines, the deterioration of sanitation services, breakdowns in garbage collection, environmental sanitation, and severe social distress."
A nurse from a clinic in Matanzas told El Pais, "It is not a lie to say that we are dying." Adding to the crisis, the powerful storm Melissa hit the island in November 2025, causing significant flooding. Bins overflowed on the streets as water treatment stalled, creating ideal breeding grounds for mosquitoes and accelerating infections.
With daily blackouts, Cuba lacks the fuel to guarantee fumigation, and insecticides are scarce. This comes at a time when Donald Trump issued a stark warning to Cuba, stating that the country is "ready to fall" without military action.
According to Amnesty International, Cuba is experiencing its highest levels of repression in decades. Independent NGOs are not allowed to operate freely, and the free press is stifled, leading to a lack of transparency and accountability.
Lima added, "In this context, there is no mechanism for early warning or independent oversight—conditions that are particularly dangerous in a public health emergency. This crisis is not accidental."
In a country with a collapsed health system, 70,000 workers in the sector have quit, and more than 30,000 doctors have emigrated in the last three years. Hospitals have closed, such as the Aballí Children's Hospital in Arroyo Naranjo, while others are overcrowded with patients.
Manuel stated, "Authorities waited months before publicly acknowledging the scale of the chikungunya outbreak and initially downplayed its severity, leaving citizens to rely on social media and independent outlets for information. Even after recognizing the epidemic, official updates have remained opaque, offering limited data on hospitalizations, regional spread, or deaths."
This lack of transparency has led many Cubans to accuse the regime of a cover-up. In October, the Cuban intellectual Alina Bárbara López posted on Facebook that authorities were "manipulating" the "extremely serious situation" in Matanzas, where she resides. She wrote, "The order to deny the deceased of 'arbovirosis' is given. We have a hungry, ageing, stressed population, without medication for a long time to treat their chronic diseases. While the epidemic became stronger town by town, they have hardly sold paracetamol or rehydrating salts in pharmacies. Such a scenario makes possible deaths that would not have happened at any other time."
The Sun has reached out to the Cuban Ministry of Foreign Affairs for comment.
So, what exactly is a 'combined arbovirus'? It is not a single disease but a category of infections with similar traits, symptoms, and transmission methods. The term describes a patient's condition that fits the profile of an insect-borne viral infection before a specific virus has been officially identified. Most arboviral illnesses follow a standard incubation period, with symptoms typically appearing within 3 to 14 days after being bitten by an infected mosquito or tick.
Doctors treat these illnesses as a "combined" group because they are clinically indistinguishable at the start. Arboviral illnesses typically present in three ways: systemic/febrile (most common), neuroinvasive (most serious), and hemorrhagic (specific viruses).
The systemic/febrile presentation is a sudden flu-like illness with high fever, chills, severe headache, muscle aches, joint pain, and skin rash, often leading to fatigue that can last for weeks.
The neuroinvasive form occurs when the virus enters the central nervous system, causing symptoms like meningitis (stiff neck, fever, and light sensitivity), encephalitis (confusion, altered mental state, seizures, or tremors), and paralysis (sudden weakness in limbs, similar to polio).
Hemorrhagic presentations are seen in diseases like Dengue or Yellow Fever, with symptoms such as unexplained bruising, bleeding gums, or internal bleeding.
The situation in Cuba is complex and concerning, with many questions remaining unanswered. What are your thoughts on this mysterious virus and the government's response? Do you think there is more to this story than meets the eye? Feel free to share your opinions and engage in a discussion in the comments section below.
