- 💧 Constant hydration — water, oral rehydration solution, clear broths
- 🌡️ Acetaminophen ONLY for fever — NEVER aspirin or ibuprofen
- 🏥 See a doctor today at a health center for testing
- 🚨 Emergency if: persistent vomiting, abdominal pain, bleeding, extreme drowsiness
Dengue is the most common mosquito-borne illness in Guatemala. Every year between May and October — the rainy season — cases rise sharply because standing water multiplies the population of Aedes aegypti, the mosquito that transmits the virus. In bad years the country reports 20,000-30,000 cases; in “quiet” years, 5,000-10,000. Most severe cases concentrate in lowland departments: Petén, Izabal, Escuintla, Suchitepéquez, Retalhuleu, Zacapa, and the Pacific coast in general.
This page is a practical guide: what dengue is, how to recognize it early, the warning signs you can NOT ignore, how to eliminate breeding sites in your home, what repellent to use, and what to do if you get sick. Information based on MSPAS, PAHO/WHO and CDC guidelines. Updated May 9, 2026 — the rainy season is just starting.
Quick summary: Dengue is transmitted by the Aedes aegypti mosquito, which bites during the day (especially dawn/dusk) and breeds in clean standing water in and around your home. There’s no universal vaccine and no antiviral medicine — treatment is hydration + acetaminophen (NEVER aspirin or ibuprofen). Prevention is the only thing that works: eliminate breeding sites in your home, use repellent, sleep under a net. If you have high fever + pain behind the eyes + body aches, see a doctor TODAY. Warning signs (persistent vomiting, abdominal pain, bleeding) = IMMEDIATE hospital emergency.
Travelers from the US: what you should know
Dengue is a real risk in Guatemala — but for most US travelers, the trip is still safe with reasonable precautions. Here’s the breakdown:
| Your situation | Recommendation |
|---|---|
| Tourist in highlands (Antigua, Atitlán, Quetzaltenango) | Lower risk (cooler altitudes). Use repellent at dawn/dusk and check for screens at lodging. |
| Tourist in lowlands (Petén/Tikal, Río Dulce, Pacific beaches) | Higher risk. Use 20-30% DEET continuously, long sleeves at dawn/dusk, sleep under net or in air-conditioned room. |
| Pregnant traveler | Discuss with your OB before traveling. Dengue in pregnancy can cause complications. CDC says be cautious. |
| Diaspora visiting family in lowland communities | Same prevention rules — and brief your hosts on eliminating breeding sites if you’re staying long. Locals sometimes underestimate ongoing risk. |
| Long-stay (over 2 weeks) in dengue-heavy zone | Consider all four prevention layers seriously: repellent, screens, breeding-site elimination, clothing. |
| Previous dengue infection | Higher risk of severe dengue if reinfected with a different serotype. Be MORE careful, not less. |
| Returning home with fever | If you develop fever within 14 days of returning from Guatemala, tell your US doctor about your trip — dengue isn’t on every doctor’s radar. Mention “rule out dengue” by name. |
What CDC recommends specifically for travelers
The CDC does NOT recommend the dengue vaccine (Dengvaxia) for most US travelers — it’s only for people with prior lab-confirmed dengue infection living in endemic areas, not short-term visitors. Their core travel advice for dengue zones:
- Insect repellent: EPA-registered DEET, picaridin, IR3535, or oil of lemon eucalyptus (OLE/PMD) at recommended concentrations
- Permethrin-treated clothing (treat at home before trip — lasts ~70 washes)
- Air-conditioned or well-screened lodging when possible
- Avoid outdoor activity at dawn and dusk when Aedes aegypti bites most
- Travel insurance with medical evacuation — useful if you develop severe dengue in a remote area
What to do if symptoms appear during or after your trip
- In Guatemala: see a doctor at any private hospital (Centro Médico, Herrera Llerandi, Hospital Universitario Esperanza in Guatemala City; Hospital Nacional Pedro de Bethancourt in Antigua). Most private consultations are USD 50-100 and dengue testing (NS1 rapid test) is widely available
- Within 2 weeks after returning to the US: see your doctor and explicitly mention recent travel to Guatemala. Symptoms can appear up to 14 days after infection. US doctors don’t always test for dengue automatically — you may need to ask
- Avoid aspirin and ibuprofen while symptoms are unclear — they can worsen bleeding if it turns out to be dengue. Use acetaminophen (Tylenol) instead
What is dengue?
Dengue is an acute viral disease caused by a virus in the Flaviviridae family. It transmits EXCLUSIVELY through the bite of infected mosquitoes — primarily female Aedes aegypti and, to a lesser extent, Aedes albopictus. It does NOT spread person-to-person through contact, coughing, or sneezing.
The 4 serotypes — why they matter
Four serotypes of the dengue virus exist: DEN-1, DEN-2, DEN-3, and DEN-4. All four circulate in Guatemala. When you get sick with one:
- You become immune for life to that specific serotype
- You become temporarily immune (a few months) to the other three
- After that, a second infection with a different serotype increases the risk of severe dengue — because the antibodies you produced against the first serotype can, paradoxically, help the second virus infect more cells (a phenomenon called antibody-dependent enhancement)
That’s why most cases of severe dengue in Guatemala are second infections, not first. If you’ve had dengue before, don’t get complacent.
Why it’s dangerous
Most dengue cases are mild to moderate — 5 to 7 days of fever, malaise, body aches, full recovery. But 1% to 5% of cases progress to severe dengue, which can be fatal:
- Dengue shock (sudden drop in blood pressure → organ failure)
- Internal hemorrhage (gastrointestinal, pulmonary, cerebral)
- Severe liver damage
- Central nervous system involvement
- Death (without timely hospital care, severe dengue mortality can reach 20%; with proper treatment, drops below 1%)
Young children, pregnant women, older adults, and people with diabetes, hypertension, or chronic conditions are at higher risk of complications.
Dengue season in Guatemala
Dengue is endemic in Guatemala — circulating year-round in warm, humid zones. But there’s a clear seasonal pattern:
| Month | Risk | Why |
|---|---|---|
| January - April | Low to moderate | Dry season, fewer breeding sites |
| May - June | High and rising | Rains begin, breeding sites appear |
| July - September | PEAK | Constant rains, maximum mosquito populations |
| October - November | High, declining | Less frequent rains but still breeding sites |
| December | Moderate | Dry season begins |
Highest-risk departments
The lowland zones (under 1,500 meters / ~5,000 feet above sea level) are where Aedes aegypti thrives. Departments with most cases historically:
- Petén (entire department — including Tikal area)
- Izabal (Puerto Barrios, Morales, Livingston, Río Dulce)
- Escuintla (Pacific coast: Puerto San José, Tiquisate, La Gomera)
- Suchitepéquez (Mazatenango and coast)
- Retalhuleu (Champerico and coast)
- Zacapa (Río Hondo, Gualán)
- Chiquimula (lower areas)
- Jutiapa and Santa Rosa (coastal zones)
- Quiché (Ixcán and lowland zones)
- Alta Verapaz (lowland sectors like northern Cobán, Chisec, Fray Bartolomé)
Guatemala City, Antigua, and Quetzaltenango have fewer cases due to higher altitude (cooler), but local outbreaks have occurred — climate change is pushing the mosquito to higher elevations every year.
Climate change and dengue
Recent studies show that the effective dengue transmission season in Guatemala has lengthened and the mosquito’s altitudinal range has risen in the last two decades. Places that used to be “too cold” for Aedes aegypti now report occasional outbreaks — including urban Guatemala City zones above 1,500 meters. This means prevention isn’t just for coastal departments anymore.
Dengue symptoms: how to recognize it early
Symptoms appear 4 to 10 days after the bite of an infected mosquito. Distinguishing the phases is critical because the MOST dangerous moment isn’t when fever is high — it’s when fever DROPS.
Febrile phase (days 1-3, sometimes through day 7)
Classic dengue symptoms:
- 🌡️ Sudden high fever (39-40°C / 102-104°F)
- 🧠 Severe headache, especially behind the eyes (retro-orbital pain)
- 💪 Severe muscle and joint pain — that’s why it’s nicknamed “breakbone fever”
- 🤢 Nausea and vomiting
- 🌡️ Hot flashes with chills
- 😴 Extreme fatigue, general malaise
- 🫥 Loss of appetite, metallic taste in mouth
- 👁️ Red eyes, light sensitivity
Rash phase (day 3-5)
- 🔴 Red rash typically appearing on day 3-5
- Can be flat (macules) or slightly raised
- Face, trunk, arms and legs
- Itchy in some people
- Palms and soles can turn red and blanch when pressed
Critical phase (days 3-7) — DANGER WINDOW
When fever DROPS (typically day 3-7), the body enters a critical phase that determines whether the case is mild or progresses to severe dengue. Do NOT relax when the fever drops — quite the opposite, increase observation. Most deaths occur in this phase.
This phase lasts 24-48 hours. If the patient gets through it well, recovery begins. If not, warning signs appear (next section) and you need to rush to the hospital.
Recovery phase (days 7-10)
- Fever resolves definitively
- Rash may reappear (“recovery rash” or “convalescent rash”)
- Fatigue and weakness can last 2-4 weeks
- Some people experience post-viral depression
WARNING SIGNS — When to go to the hospital IMMEDIATELY
These signs indicate severe dengue in progress. You need URGENT hospital care. Do NOT wait. Do NOT “sleep on it to see if you feel better in the morning.” Run:
| Warning sign | Why it’s serious |
|---|---|
| 🤮 Persistent vomiting (more than 3 in 1 hour, or unable to keep liquids down) | Dehydration + sign of progression |
| 🤰 Severe or continuous abdominal pain | Possible fluid leakage into abdominal cavity |
| 🩸 Bleeding from gums, nose, vagina (off-cycle); blood in urine, stool, or vomit | Active hemorrhage |
| 🫁 Difficulty breathing or rapid breathing | Possible pleural effusion |
| 😴 Extreme drowsiness, restlessness, or confusion | Neurological involvement |
| 🥶 Cold hands and feet, paleness, clammy skin | Sign of shock |
| 💧 Sudden decrease in urination (no urine in 6+ hours) | Kidney involvement or severe dehydration |
| 📉 Severe dizziness when standing, near-fainting | Drop in blood pressure |
| 🌡️ Sudden fever drop accompanied by general worsening | Typical onset of critical phase |
Golden rules:
- Take the sick person with a companion — don’t drive yourself if you’re sick
- Keep a record of symptoms (when fever started, when it dropped, vomiting, etc.)
- If they’re a young child, pregnant, older adult, or have diabetes/hypertension: lower the threshold, consult BEFORE warning signs appear
- MSPAS public hospitals treat free of charge. If you have IGSS, there’s also coverage. Private hospitals charge
How to prevent dengue
There’s no universal vaccine and no antiviral medicine. The only thing that works is avoiding bites and eliminating mosquito breeding sites.
1. Eliminate breeding sites in your home (THE most important)
Aedes aegypti breeds inside and around your home, not in distant swamps. It lays eggs in any container with clean standing water. If you want to break transmission, this is what you HAVE to do:
| Typical breeding site | Action |
|---|---|
| Water tanks and barrels | Cover hermetically. If you can’t, scrub with brush every 7 days (eggs stick to walls) |
| Old tires | Flip them, puncture them, or eliminate them. They’re breeding site #1 |
| Vases and water plants | Change water every 3 days, or use sand/gel instead of water |
| Lids, cans, bottles, empty buckets | Flip, eliminate, or store under cover |
| Roof gutters | Clean and unclog at start of each rainy period |
| Pet water bowls | Wash and change water daily |
| Saucers under flowerpots | Empty after each watering |
| Toys in the yard | Pick up after playing — any cavity collects water |
| Outdoor laundry sinks (pilas) | Keep empty when not in use, or scrub walls with brush |
| Elevated tanks / cisterns | Cover hermetically with mesh |
The larvicide (abate) MSPAS distributes is applied in tanks and barrels that can’t be covered — kills larvae without harming humans. It’s free and health center promoters distribute it door-to-door in high-risk zones.
2. Repellent — what works
| Repellent | Recommended concentration | Duration |
|---|---|---|
| DEET (N,N-Diethyl-meta-toluamide) | 20-30% adults, max 10% in children 2-12 | 6-8 hours |
| Picaridin (Icaridin) | 20% | 6-8 hours, no smell |
| Oil of lemon eucalyptus (PMD) | 30% | 4-6 hours, natural option |
| IR3535 | 20% | 4-6 hours |
Application rules:
- Apply repellent AFTER sunscreen, NOT before
- Reapply every 4-6 hours, or after heavy sweating or swimming
- NOT on babies under 2 months (use a mosquito net)
- On children: never on face, hands, or near eyes. Apply it to your hands first then rub onto child’s skin
- Wash skin with soap and water when you get home
- Be cautious with “natural” repellents without certification — over-the-counter citronella and essential oils have very short duration
3. Physical protection
- 🪟 Screens on windows and doors — Aedes aegypti enters homes easily
- 🛏️ Mosquito net over the bed — especially babies, children, and during naps
- 👕 Long sleeves + long pants — light colors, thin fabric
- 🌅 Watch out at dawn and dusk — these are when this mosquito bites MOST (unlike other mosquitoes that bite at night)
- 🌬️ Fan or air conditioning — the mosquito flies poorly in air currents
4. Community prevention
Dengue is NOT controlled house by house alone. It’s a neighborhood problem. If your house is clean but the empty lot next door has a tire full of water, mosquitoes still come. Collective actions:
- Coordinate with neighbors to clean empty lots
- Report large breeding sites to the health center (centers send fumigation brigades when there’s a local outbreak)
- In condos and residential developments: ask the administrator for regular inspections and cleanings
Dengue treatment: there is NO antiviral
This is the part that confuses people most: there’s no medicine that kills the dengue virus. Treatment is supportive — helping the body endure while it fights the virus alone.
What TO do
- 💧 Constant hydration: clean water, oral rehydration solution (Pedialyte, homemade ORS), clear broths, natural juices without added sugar. Minimum 2-3 liters/day in adults. If vomiting, small sips every 5-10 minutes
- 🌡️ Acetaminophen (Tylenol) for fever and pain — standard dose (500 mg adult every 6 hours, children by weight). Maximum 4 grams/day in adults, 60 mg/kg/day in children
- 🛏️ Complete rest — body needs energy to fight the virus
- 🧊 Cool compresses on forehead, armpits, and groin to lower fever without medications
- 🍲 Eat lightly — soups, broths, fruits, atoles. Don’t force eating if there’s nausea
- 📊 Monitor warning signs every 4-6 hours, especially when fever drops
What to NEVER do
| ❌ DO NOT use | Why |
|---|---|
| Aspirin (acetylsalicylic acid) | Increases bleeding risk in dengue. In children and teens, causes Reye syndrome |
| Ibuprofen, naproxen, diclofenac (NSAIDs) | Same problem — increase bleeding risk and affect platelets |
| Intramuscular injections | Can cause hematomas and bleeding |
| Antibiotics (without medical indication) | Dengue is viral, not bacterial. Antibiotics don’t help and mask complications |
| Unproven home remedies | Papaya leaves, vitamin K, exotic juices — no evidence and they can delay medical care |
| Corticosteroids (dexamethasone, prednisone) | Can worsen the case, only under hospital supervision |
Hospital care
If warning signs appear, in the hospital they typically:
- Admit the patient for observation or intermediate care
- Carefully controlled IV hydration
- Monitor platelets, hematocrit, and vital signs every 4-6 hours
- Platelet transfusion ONLY if active bleeding (not preventive)
- In shock: ICU management
Severe dengue mortality, well-managed in hospital, is under 1%. Without care: up to 20%. That’s why the rule is when in doubt, get it checked.
Dengue vaccine: current status in Guatemala
Dengue vaccines exist worldwide, but their use is very limited and they’re not yet a mass solution in Guatemala:
Dengvaxia (Sanofi)
- Approved in some countries since 2015
- KEY PROBLEM: should only be given to people who have already had lab-confirmed dengue (positive serology). In people without prior infection, the vaccine can INCREASE risk of severe dengue if they’re later infected naturally
- This means a blood test is required before vaccinating — logistically difficult
- In Guatemala it is NOT included in the public MSPAS schedule and isn’t promoted broadly. Some private hospitals offer it with medical prescription
Qdenga / TAK-003 (Takeda)
- More recent vaccine, approved in Indonesia (2022), EU (2022), Brazil (2023), Argentina (2023) and others
- Doesn’t require prior serology for all groups (more practical)
- 2 doses 3 months apart
- Still under regulatory evaluation in many Latin American countries
- In Guatemala not publicly available as of 2026
So what to do?
For 2026 in Guatemala, prevention remains the primary method: eliminate breeding sites, repellent, mosquito net. The vaccine does NOT replace these measures — even in countries where it’s already used, it’s a complement, not a replacement.
If you’re interested in private vaccination and have had confirmed dengue before, consult an infectious disease specialist or pediatrician to evaluate if Dengvaxia is appropriate for your case.
Myths and facts about dengue
| Myth | Reality |
|---|---|
| “Dengue only happens on the coast” | ❌ FALSE. Most cases are in lowlands, but climate change is expanding the range. There are now outbreaks in Guatemala City, Antigua, Quetzaltenango |
| “If I get dengue once, I’m immune” | ❌ FALSE. You’re only immune to that specific serotype (1 of 4). A second infection can be MORE SEVERE |
| “Papaya leaves cure dengue” | ❌ NOT PROVEN. Some small studies suggest they may help raise platelets, but they do NOT replace medical treatment. Don’t delay going to hospital to try remedies |
| “Dengue spreads person-to-person” | ❌ FALSE. Only via bite of infected mosquito. Exception: mother to fetus during pregnancy, blood transfusion or transplant (rare) |
| “The dengue mosquito bites at night” | ❌ FALSE. Aedes aegypti bites DURING THE DAY, especially dawn and dusk. That’s why a bed net alone isn’t enough — you need repellent during the day too |
| “Fumigations alone control dengue” | ❌ PARTIAL. Fumigations kill adult mosquitoes but NOT larvae. Without eliminating breeding sites, in a week there are new mosquitoes. Eliminating breeding sites is most effective |
| “If I don’t have a rash, it’s not dengue” | ❌ FALSE. Only 50% of patients develop a rash. Fever + body aches + being in an endemic zone is enough to suspect |
| “Just drinking lots of water is enough, I don’t need a doctor” | ⚠️ PARTIAL. Hydration is key BUT you need medical evaluation to rule out severe dengue. The consultation isn’t optional |
Additional FAQ
How long is a person contagious? A person with dengue is “contagious” to mosquitoes during the first 5-7 days (while the virus is in their blood). If a mosquito bites you in that window and then bites someone else, it transmits the virus. That’s why it’s important to use a mosquito net even when you’re sick — to avoid infecting neighborhood mosquitoes.
Can I breastfeed if I have dengue? Yes. The dengue virus does NOT transmit through breast milk. Breastfeeding is safe and recommended to continue.
Does dengue affect pregnancy? Yes, it can be more serious. Pregnant women with dengue have higher risk of preterm birth, low birth weight, and rarely, transmission to the baby. If you’re pregnant with suspected dengue: see a doctor immediately, don’t wait for warning signs.
How long does a dengue test take? The rapid test (NS1) detects the virus in the first 1-7 days of fever — results in 15-30 minutes. Serology (IgM/IgG) detects antibodies starting day 5 — results in hours. Both are available at MSPAS health centers and most private labs.
Do MSPAS fumigations work? Fumigations (UBV — ultra-low volume) kill adult mosquitoes at the moment of spraying. Useful when there’s an active local outbreak. But they don’t eliminate eggs or larvae — that’s why the next step is always eliminating breeding sites. Fumigation alone without breeding-site elimination does NOT control dengue.
Why isn’t there a universal vaccine yet? Because of the 4 serotypes. An ideal vaccine has to protect equally against all 4 simultaneously, without causing the enhancement effect. It’s one of the most complex challenges in virology. Current vaccines are progress but not yet the definitive solution.
How do I distinguish dengue from chikungunya or zika? The same mosquito transmits all three. Symptoms compared:
| Symptom | Dengue | Chikungunya | Zika |
|---|---|---|---|
| High fever | ✅ Yes | ✅ Yes | Sometimes, mild |
| Joint pain | Moderate | VERY intense | Mild |
| Retro-orbital pain | Intense | Sometimes | Sometimes |
| Rash | Sometimes | Sometimes | Frequent |
| Conjunctivitis | Sometimes | Rare | Frequent |
| Bleeding | Possible (severe) | Rare | Rare |
| Pregnancy risk | Preterm birth | Low | Fetal microcephaly |
The only way to confirm is a lab test. When in doubt, treat it as dengue (safer rule).
Official resources and links
- Official MSPAS dengue page: mspas.gob.gt/institucional/emergencia/dengue
- MSPAS epidemiological surveillance: epidemiologia.mspas.gob.gt — weekly bulletins with cases by department
- Find a health center: establecimientosdesalud.mspas.gob.gt
- WhatsApp ALMA 24/7: +502 2339-9810 — health guidance
- MSPAS general: 2444-7474 (Mon-Fri 8 AM - 4:30 PM)
- PAHO Guatemala — dengue: paho.org/en/topics/dengue
- CDC dengue: cdc.gov/dengue
- CDC traveler info: wwwnc.cdc.gov/travel/destinations/traveler/none/guatemala
More on public health in Guatemala
- MSPAS Guatemala Hub — everything about the Ministry of Public Health
- Measles Guatemala 2026 — active outbreak, free MMR vaccine
- IGSS Guatemala — social security for formal workers
- Guatemala Trámites — complete directory of state services
This page compiles official information from MSPAS, PAHO/WHO, and CDC about dengue in Guatemala. Updated May 9, 2026 — start of the rainy season. For individual medical consultations, contact a healthcare professional or MSPAS at 2444-7474. This page does NOT replace medical care.