It’s easy to worry when a cough or a fever shows up, especially with so many viruses circulating. Whether you’re feeling off or just want to be prepared, knowing the current COVID-19 symptoms can help you decide what to do next. We’ve checked the latest guidance from the CDC, WHO, and NHS so you can spot the signs early and know when to seek care.

Incubation period: 2 to 14 days after exposure ·
Most common symptoms: Fever, dry cough, fatigue ·
Distinctive symptom: New loss of taste or smell ·
Typical duration of mild illness: 1 to 2 weeks

Quick snapshot

1Confirmed facts
2What’s unclear
  • Exact symptom prevalence varies by study and population
  • Long COVID duration and effects are still under investigation
3Timeline signal
  • Omicron variant shifted symptoms toward upper respiratory signs like sore throat and runny nose (NHS (U.K. health service))
4What’s next
  • New subvariants may continue to evolve; current symptom lists remain consistent but nuanced (CDC (U.S. public health agency))

Here is a summary of the key facts about COVID-19 symptoms.

Key facts about COVID-19 symptoms
Label Value
Incubation period 2–14 days (median 4–5 days)
Most common symptoms Fever, dry cough, fatigue
Distinctive symptom Loss of taste or smell
Duration of mild illness 1–2 weeks
Long COVID prevalence 10–20% of cases (WHO estimate)

What are the most current signs of COVID?

Since the virus emerged, the list of recognised symptoms has grown. The CDC, WHO, and NHS all maintain updated symptom lists, and while they largely agree, each agency organises them slightly differently.

Common symptoms listed by the CDC

  • Fever or chills
  • Cough
  • Shortness of breath or difficulty breathing
  • Sore throat
  • Congestion or runny nose
  • New loss of taste or smell
  • Fatigue
  • Muscle or body aches
  • Headache
  • Nausea or vomiting
  • Diarrhea

The CDC notes that symptoms may change with new variants and can vary depending on vaccination status. They emphasise that loss of taste or smell is a possible symptom but not required for diagnosis.

Symptoms reported by the WHO

The WHO separates symptoms into common and less common categories. The most common are fever, chills, and sore throat. Less common symptoms include muscle aches, severe fatigue, runny or blocked nose, sneezing, headache, sore eyes, dizziness, cough, chest pain, shortness of breath, hoarse voice, appetite loss, nausea, vomiting, abdominal pain, diarrhoea, loss or change of taste or smell, and difficulty sleeping.

How symptoms differ by variant

With the Omicron variant, symptoms shifted more toward upper respiratory signs. The NHS now includes a blocked or runny nose, sneezing, and sore throat more prominently. Loss of smell has become less common with recent subvariants, though it still appears in the official lists.

Bottom line: CDC and WHO confirm fever, cough, and fatigue remain core, but sore throat and runny nose are now very common. Your vaccination status can affect which symptoms you experience.

The implication: symptom presentations are evolving, so relying solely on the classic triad may miss current cases.

How can I tell if I have COVID or a cold?

Distinguishing COVID-19 from the common cold is tricky because both are respiratory infections with overlapping signs. The key differences lie in symptom severity, duration, and the presence of certain indicators.

Key differences between COVID-19 and the common cold

One clear pattern: COVID-19 often includes fever, loss of taste or smell, and shortness of breath, while colds typically do not. Colds are more likely to cause sneezing, runny nose, and mild sore throat, and they usually resolve faster.

Five symptoms, one contrast:

Symptom COVID-19 Common cold
Fever Common (83% of cases per studies) Rare
Loss of taste/smell Distinctive early sign Very rare
Shortness of breath Possible, especially in moderate cases Uncommon
Sneezing Less common overall Very common
Runny or blocked nose Common with Omicron Very common

The UKHSA notes that cold symptoms are usually milder and shorter-lived. If you have fever, new loss of smell, or breathing trouble, COVID-19 is more likely.

When to take a test

The NHS advises testing if you have a high temperature, a new continuous cough, or a loss or change to your sense of smell or taste. Even mild symptoms warrant a test if you’re in contact with vulnerable people.

The catch

With Omicron, the line between COVID and cold has blurred. A runny nose alone is no longer a reliable differentiator. Testing is the only sure way to know.

The pattern: distinguishing COVID from cold now requires more than symptom checklists; a test is the definitive tool.

How long do symptoms of COVID last?

Duration depends on severity, variant, and individual health. Most people recover within a week or two, but some face lingering effects.

Typical duration for mild cases

Mild illness typically lasts 1–2 weeks (per WHO). The NHS says that most people recover within 12 weeks, but symptoms can persist longer.

Long COVID and persistent symptoms

An estimated 10–20% of people experience long COVID (WHO estimate), with symptoms lasting weeks or months. Common long COVID symptoms include extreme fatigue, brain fog, and shortness of breath.

Factors that influence recovery time

  • Age and underlying health conditions
  • Vaccination status (vaccinated people tend to recover faster)
  • Variant (Omicron is associated with shorter illness on average)

The CDC states that symptoms can vary based on vaccination status, which may affect both severity and duration.

Bottom line: WHO estimates 1 in 10 people experience long COVID; vaccination reduces severity and duration.

What this means: recovery outlook is generally good, but lingering symptoms are common enough to warrant attention.

What are the two most common signs of COVID?

Across multiple health agencies, two symptoms consistently top the list: fever and dry cough. Fatigue is a close third.

Fever and dry cough as hallmark symptoms

The HSE lists fever, cough, and loss of smell as the most common. The WHO names fever, dry cough, and tiredness. The CDC similarly ranks fever and cough at the top of its list.

Fatigue as a close third

Fatigue is reported in a large proportion of cases and is often one of the earliest symptoms. It can persist after other signs resolve.

How these signs present across different age groups

Children may show milder symptoms, with fever and cough common but loss of smell less frequent. Older adults are more likely to experience shortness of breath and confusion. The ECDC notes that symptom patterns can vary by age, but fever and cough remain the most reliable indicators.

Why this matters

If you have a fever and a new cough, assume COVID until proven otherwise. Testing is cheap; the cost of spreading it is not.

The catch: even if you lack fever or cough, other symptoms can indicate COVID, so stay alert.

What helps COVID go away faster?

There is no specific cure for COVID-19. Supportive care is the mainstay, and the same principles apply across all variants.

Rest and hydration

The NHS recommends resting, drinking plenty of water, and using paracetamol or ibuprofen for fever and pain if appropriate.

Over-the-counter medications for symptom relief

  • Paracetamol or ibuprofen for fever and body aches
  • Honey and lemon for sore throat
  • Nasal sprays for congestion

The CDC advises that you can treat mild symptoms at home, but monitor for worsening signs.

When to seek medical care

Seek emergency care if you have trouble breathing, persistent chest pain, confusion, bluish lips or face, or inability to wake up. The WHO emphasises that early detection and supportive care reduce the risk of severe illness.

Bottom line: CDC and WHO recommend rest and fluids as first line; seek emergency care if breathing becomes difficult.

The implication: acting early can prevent severe outcomes, but knowing when to escalate is critical.

Timeline of COVID-19 symptom evolution

The symptoms of COVID-19 have shifted as the virus mutated. Here’s how the picture has changed.

  • Late 2019 – First cases identified in Wuhan, China; initial symptoms reported as fever, dry cough, and shortness of breath (WHO (global health authority))
  • 2020–2021 – Alpha and Delta variants show similar symptom profiles; loss of taste/smell becomes a hallmark (CDC (U.S. public health agency))
  • Late 2021–2022 – Omicron variant emerges; symptoms shift to include more upper respiratory signs like sore throat, runny nose, and less loss of smell (NHS (U.K. health service))
  • 2023–2025 – New subvariants continue to evolve; current CDC and WHO symptom lists remain largely consistent but note variant-specific nuances (CDC (U.S. public health agency))

What we know and what we’re still learning

Confirmed facts

  • COVID-19 can cause fever, cough, fatigue, and loss of taste/smell
  • Symptoms typically appear 2–14 days after exposure
  • Most people recover within 1–2 weeks

What’s unclear

  • Exact prevalence of each symptom varies by study and population
  • Long-term effects and duration of long COVID are still being studied
  • Whether new variants will cause different symptom profiles is not yet fully known

What the health authorities say

“People with COVID-19 have reported a wide range of symptoms – from mild symptoms to severe illness.”

CDC (U.S. public health agency)

“The most common symptoms of COVID-19 are fever, dry cough, and tiredness.”

WHO (global health authority)

“The main symptoms of COVID-19 are a high temperature, a new continuous cough, and a loss or change to your sense of smell or taste.”

NHS (U.K. health service)

The pattern is clear: fever and cough remain the most reliable early signs, but the list has expanded. The HSE and ECDC align with this consensus. For anyone wondering whether their symptoms are COVID-19, the choice is clear: test early and rest, or risk spreading the virus to others.

For the most current information, you can read about the new COVID-19 symptoms in 2025 that doctors are reporting.

Frequently asked questions

Can you have COVID-19 without a fever?

Yes. Many people, especially those who are vaccinated or have mild cases, never develop a fever. The CDC lists fever as a possible symptom, not a requirement.

Are sneezing and runny nose symptoms of COVID-19?

Yes, especially with Omicron and its subvariants. The NHS includes a blocked or runny nose in its symptom list.

Do children show different symptoms than adults?

Children tend to have milder symptoms, often with fever and cough but less loss of smell. The ECDC notes that severe illness is rare in children.

How long after exposure do symptoms start?

Symptoms typically appear 2–14 days after exposure, with a median of 4–5 days (WHO).

Can symptoms come and go?

Yes, especially in mild cases. Fatigue and cough may fluctuate. The NHS advises monitoring for worsening rather than daily ups and downs.

Is loss of taste or smell still a common symptom with new variants?

It has become less common with Omicron but remains a recognised symptom. The CDC still includes it in its list.

Should I test if I have mild symptoms?

Yes. The UKHSA recommends testing if you have any symptom that could be COVID, even mild ones, to protect others.

What should I do if my symptoms get worse?

Seek medical help if you have trouble breathing, chest pain, confusion, or bluish lips. The HSE advises calling your doctor or emergency services if symptoms worsen.