Symptoms have varied widely and progressed in unpredictable ways among the millions of cases seen so far.
Here’s a guide to what to watch for.
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Some patients have only mild illness, but others have worsening symptoms and a sense of constant discomfort.
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Many patients report respiratory ailments along with these other commonly reported symptoms.
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Blood clots can be life-threatening, as they can travel to the lungs, heart or brain.
Short, rapid breathing or severe shortness of breath, particularly at rest, require urgent medical attention.
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In very rare cases Covid can cause a severe inflammatory response. Seek emergency care if a child shows any of these warning signs or symptoms that cause concern:
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If you have a symptom that might be Covid-19, doctors say you should isolate until you can be tested.
Read more in our guide to help you understand the symptoms.
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