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COVID-19 overview: symptoms, transmission, and long-term effects
COVID-19 is a contagious disease caused by the SARS-CoV-2 coronavirus. The disease spread globally in January 2020, initiating a pandemic. Symptoms, which can appear one to fourteen days after exposure, often include fever, fatigue, cough, breathing difficulties, and loss of taste or smell.
Approximately one-third of infected individuals do not exhibit noticeable symptoms. Among those who do develop symptoms, 81% experience mild to moderate cases, 14% experience severe symptoms, and 5% face critical conditions such as respiratory failure or organ dysfunction. Older populations face a higher risk of severe illness.
Transmission occurs through respiratory particles, often in close proximity or via airborne particles in indoor settings, as well as through contact with contaminated surfaces. Individuals can remain contagious for up to 20 days. Some patients experience long-term effects known as long COVID, which can persist for months or years. Diagnostic testing includes RT-PCR, transcription-mediated amplification, and RT-LAMP.
Entities
Claims
What the coverage asserts, and how many sources carry each claim.
- [● 5 SOURCES] At least 33% of infected individuals do not show noticeable symptoms. saopaulotimes.com.br · dupuydelome-lorient.fr · vl.dk · www.redegraal.com.br · dustoff.org
- [● 5 SOURCES] The disease spread worldwide in January 2020, leading to a pandemic. saopaulotimes.com.br · dupuydelome-lorient.fr · vl.dk · www.redegraal.com.br · dustoff.org
- [● 5 SOURCES] Infected individuals can remain contagious for up to 20 days. saopaulotimes.com.br · dupuydelome-lorient.fr · vl.dk · www.redegraal.com.br · dustoff.org
- [● 5 SOURCES] COVID-19 is caused by the SARS-CoV-2 coronavirus. saopaulotimes.com.br · dupuydelome-lorient.fr · vl.dk · www.redegraal.com.br · dustoff.org
- [● 5 SOURCES] Among symptomatic patients, 81% experience mild to moderate symptoms, 14% experience severe symptoms, and 5% experience critical symptoms. saopaulotimes.com.br · dupuydelome-lorient.fr · vl.dk · www.redegraal.com.br · dustoff.org
- [● 5 SOURCES] Testing methods include RT-PCR, transcription-mediated amplification, and RT-LAMP. www.redegraal.com.br · saopaulotimes.com.br · dupuydelome-lorient.fr · dustoff.org · vl.dk
- [● 5 SOURCES] Long COVID can cause effects lasting months or years after the initial infection. www.redegraal.com.br · saopaulotimes.com.br · dupuydelome-lorient.fr · dustoff.org · vl.dk
- [● 5 SOURCES] Symptoms can appear between one and fourteen days after virus exposure. www.redegraal.com.br · saopaulotimes.com.br · dupuydelome-lorient.fr · dustoff.org · vl.dk