Short answer
Official CDC HAN guidance describes Andes virus HPS symptoms as usually appearing 4 to 42 days after exposure. Early symptoms can be nonspecific, and later respiratory symptoms can become urgent.
Exposure to early symptoms
Early symptoms can include fever, fatigue, muscle aches, headache, chills, dizziness, nausea, vomiting, diarrhea, or abdominal pain. These symptoms overlap with other illnesses, so exposure history matters.
Respiratory progression warning
Later symptoms can include coughing, shortness of breath, and chest tightness. Severe breathing difficulty, chest tightness, confusion, fainting, or rapidly worsening illness requires emergency care.
What official sources do and do not say
Official sources provide population and exposure-management guidance. They do not let this site diagnose an individual, clear an exposure, or replace public-health monitoring instructions.
Frequently asked questions
Can early symptoms look like other illnesses?
Yes. Official sources describe nonspecific early symptoms that can overlap with flu, COVID, and other viral illnesses.
When is urgent care needed?
Severe breathing difficulty, chest tightness, confusion, fainting, or rapidly worsening illness should be treated as an emergency.
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Report a correctionPrimary sources reviewed
CDC, WHO, and ECDC official public-health pages were reviewed for this build. Current outbreak counts use official outbreak updates; evergreen pages use official background and guidance pages.