- 1 Which organs are most affected by COVID-19?
- 2 Are there any side effects from the COVID-19 vaccine?
- 3 Can COVID-19 enter into the body by the hands?
- 4 Where was COVID-19 first discovered?
- 5 Who are at higher risk of developing serious illness from COVID-19?
- 6 Can COVID-19 affect the respiratory tract?
- 7 What are the mild-to-moderate side effects of the COVID-19 vaccine?
- 8 Is it safe to take paracetamol before receiving the COVID-19 vaccine?
- 9 What are some of the ways by which COVID-19 is transmitted?
- 10 How does COVID-19 spread?
- 11 Is washing hands an effective measure against COVID-19?
- 12 When was COVID-19 first identified?
- 13 How long have coronaviruses existed?
Which organs are most affected by COVID-19?
The lungs are the organs most affected by COVID-19 because the virus accesses host cells via the receptor for the enzyme angiotensin-converting enzyme 2 (ACE2), which is most abundant on the surface of type II alveolar cells of the lungs.
Are there any side effects from the COVID-19 vaccine?
Like any vaccine, COVID-19 vaccines can cause mild, short term side effects, such as a low-grade fever or pain or redness at the injection site. Most reactions to vaccines are mild and go away within a few days on their own. More serious or long-lasting side effects to vaccines are possible but extremely rare.
Can COVID-19 enter into the body by the hands?
Hands touch too many surfaces and can quickly pick up viruses. Once contaminated, hands can transfer the virus to your face, from where the virus can move inside your body, making you feel unwell.
Where was COVID-19 first discovered?
The first known infections from SARS-CoV-2 were discovered in Wuhan, China. The original source of viral transmission to humans remains unclear, as does whether the virus became pathogenic before or after the spillover event.
Who are at higher risk of developing serious illness from COVID-19?
Older people, and those with underlying medical problems like cardiovascular disease, diabetes, chronic respiratory disease, and cancer are more likely to develop serious illness.
Can COVID-19 affect the respiratory tract?
COVID-19 can affect the upper respiratory tract (sinuses, nose, and throat) and the lower respiratory tract (windpipe and lungs).
What are the mild-to-moderate side effects of the COVID-19 vaccine?
Mild-to-moderate side effects, like a low-grade fever or muscle aches, are normal and not a cause for alarm: they are signs that the body’s immune system is responding to the vaccine, specifically the antigen (a substance that triggers an immune response), and is gearing up to fight the virus.
Is it safe to take paracetamol before receiving the COVID-19 vaccine?
Taking painkillers such as paracetamol before receiving the COVID-19 vaccine to prevent side effects is not recommended. This is because it is not known how painkillers may affect how well the vaccine works.
What are some of the ways by which COVID-19 is transmitted?
COVID-19 transmits when people breathe in air contaminated by droplets and small airborne particles. The risk of breathing these in is highest when people are in close proximity, but they can be inhaled over longer distances, particularly indoors.
How does COVID-19 spread?
• Current evidence suggests that the virus spreads mainly between people who are in close contact with each other, typically within 1 metre (short-range). A person can be infected when aerosols or droplets containing the virus are inhaled or come directly into contact with the eyes, nose, or mouth.
Is washing hands an effective measure against COVID-19?
Frequent and proper hand hygiene is one of the most important measures that can be used to prevent infection with the COVID-19 virus. WASH practitioners should work to enable more frequent and regular hand hygiene by improving facilities and using proven behavior-change techniques.
When was COVID-19 first identified?
On 31 December 2019, WHO was informed of cases of pneumonia of unknown cause in Wuhan City, China. A novel coronavirus was identified as the cause by Chinese authorities on 7 January 2020 and was temporarily named “2019-nCoV”.
The most recent common ancestor (MRCA) of all coronaviruses is estimated to have existed as recently as 8000 BCE, although some models place the common ancestor as far back as 55 million years or more, implying long term coevolution with bat and avian species.