What is virus?

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Question by: Giorgio Esposito | Last updated: January 2, 2022

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(71 votes)

A virus is a tiny infectious agent that reproduces within the cells of living hosts. When infected, the host cell is forced to rapidly produce thousands of identical copies of the original virus.

Table of Contents

How can coronavirus be killed?

The use of simple disinfectants can kill the virus by nullifying its ability to infect people, for example disinfectants containing 75% alcohol (ethanol) or 0.5% chlorine based (bleach).

How do the symptoms of COVID-19 vary?

Symptoms of COVID-19 vary based on the severity of the disease, from having no symptoms (being asymptomatic) to having fever, cough, sore throat, weakness, fatigue, and muscle pain.

In case of symptoms or doubts about COVID-19 who can I contact?

In case of symptoms or doubts, stay at home, do not go to the emergency room or doctor’s offices but call your family doctor, pediatrician or doctor on the phone. Or call the regional toll-free number.

What is the COVID-19 incubation period?

The incubation period for COVID-19 (i.e. the time between exposure to the virus and the onset of symptoms) is currently estimated to be between one and 14 days.

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Is a quick test enough to make a diagnosis of COVID-19?

Rapid tests are not configured as diagnostic tests, but as screening tests, the preliminary positive result of which must be confirmed with traditional method on blood sampling.

When should a mask be worn during the COVID-19 pandemic?

It is mandatory to always have masks with you. These must be worn:

  • in indoor places other than private homes
  • in healthcare environments according to existing protocols
  • in all means of public transport

Starting from June 28, in the white zone regions, it is no longer mandatory to wear masks in outdoor places, except in contexts in which the conditions for a gathering are created (eg: markets, fairs, queues, etc. …)

What are the numbers I can call to get information on the new coronavirus?

from Italy public utility number 1500 – Covid-19 from abroad to numbers +39 0232008345 – +39 0283905385

Who can assist a COVID-19 patient?

The person who cares for the Covid-19 patient must be in good health, have no diseases that put him at risk, wear a surgical mask carefully placed on the face when in the same room as the patient.

How can I book the vaccination for COVID-19?

To book vaccination in the various regions of Italy go to the website of the Presidency of the Council of Ministers.

Is COVID-19 comparable to the seasonal flu virus?

No, the viruses that cause both COVID-19 and seasonal flu are passed from person to person and can cause similar symptoms, but the two viruses are very different and do not behave in the same way.

Who to contact in case of flu symptoms?

In case of symptoms or doubts, stay at home, do not go to the emergency room or doctor’s offices but call your family doctor, pediatrician or doctor on the phone. Or call the regional toll-free number

What must be done after the COVID-19 quarantine is completed to return to work?

At the end of the quarantine period, if no symptoms have appeared, the person can return to work and the period of absence is covered by the certificate.

If during the quarantine period the person develops symptoms, the Department of Public Health, which deals with health surveillance, will carry out the swab for the search for SARS-CoV-2. In the event of a positive outcome, it will be necessary to wait for clinical recovery and perform a molecular test after at least 3 days without symptoms. If the molecular test is negative, the person will be able to return to work, otherwise the isolation will continue.

How is COVID-19 eliminated from surfaces?

The use of simple disinfectants can kill the virus by nullifying its ability to infect people, for example disinfectants containing 75% alcohol (ethanol) or 0.5% chlorine based (bleach).

How to get rid of the new coronavirus from the floors?

The use of disinfectants for example containing 70% alcohol or 0.1% chlorine based (bleach) is sufficient to kill the virus by nullifying its ability to infect people.

Do smokers have a higher risk of contracting the coronavirus?

In addition, smokers may also already have underlying lung disease or reduced lung capacity due to smoking and this would greatly increase the risk of developing serious forms of the disease, such as pneumonia.

How is “close contact” defined in the case of the coronavirus?

The “close contact” (high risk exposure) of a probable or confirmed case is defined as:

a person living in the same home as a COVID-19 case
a person who has had direct physical contact with a COVID-19 case (e.g. handshake)
a person who has had unprotected direct contact with secretions from a COVID19 case (e.g. touching used paper handkerchiefs with bare hands)
a person who has had direct (face-to-face) contact with a COVID-19 case, at a distance of less than 2 meters and at least 15 minutes
a person who has been in an enclosed environment (e.g. classroom, meeting room, hospital waiting room) with a COVID-19 case in the absence of suitable PPE
a healthcare worker or other person providing direct assistance to a COVID-19 case or laboratory personnel handling samples of a COVID-19 case without the use of recommended PPE or through the use of unsuitable PPE
a person who traveled seated by train, plane or any other means of transportation within two seats in any direction relative to a COVID-19 case; the travel companions and the staff assigned to the section of the plane / train where the index case was sitting are also close contacts

When is a person with COVID-19 contagious?

The infectious period may begin a day or two before symptoms appear, but people are likely to be more contagious during the symptomatic period, even if the symptoms are mild and very nonspecific. The infectious period is estimated to last 7-12 days in moderate cases and on average up to two weeks in severe cases.

What is the isolation of a case affected by COVID-19?

Isolation consists of separating people with COVID-19 from healthy people as much as possible in order to prevent the spread of the infection, during the transmissibility period.

What should I do if I have no symptoms and have not completed the vaccination course and have had contact with a case of COVID-19 Beta variant?

Asymptomatic contacts of cases with VOC Beta variant SARS-CoV-2 infection, both high and low risk, may return to the community after a quarantine period of at least 10 days from the last exposure to the case, after which an antigen or molecular test has been performed with a negative result.

What is the number for information on COVID-19 in Calabria?

Regional toll-free number 800 841 289.

0961 789775 for information on the Covid-19 vaccination plan. The number is active from Monday to Friday, from 9 to 17. Saturdays from 9 to 13.

Are children also at risk of infection and what is their potential role in transmitting the virus?

Children are often asymptomatic or have mild symptoms of COVID-19 and have a much lower risk than adults of developing severe forms of the disease. However, infection in some cases can lead to the development of complications or peculiar clinical forms. This is why a lot of attention must still be paid when children show symptoms of infection, especially if they are less than one year old and in the presence of pre-existing pathological conditions.
The ability of predominantly asymptomatic children to transmit SARS-CoV-2 compared to adults is not yet known.

To learn more Page Covid-19 – Children

What masks are suitable for community use during the COVID-19 pandemic?

In the community, disposable masks or washable masks, even self-produced, in multilayer materials suitable for providing an adequate barrier and, at the same time, guaranteeing comfort and breathability, adequate shape and adherence, which allow to cover from the chin to the above the nose.

What are some precautions to follow on a daily basis during the COVID-19 pandemic?

• Avoid the mixed use of bottles and glasses, especially during sports activities.
• Do not touch your eyes, nose and mouth with your hands.
• Do not take antiviral drugs and antibiotics, unless prescribed by your doctor.

What is the difference between so-called community masks and surgical masks in the case of COVID-19?

Surgical masks are medical masks, developed for use in the healthcare environment and certified based on their filtering capacity. They meet the characteristics required by the UNI EN ISO 14683-2019 standard and work by preventing transmission.

Community masks are designed to reduce the circulation of the virus in daily life and are not subject to special certifications. Neither medical devices nor personal protective equipment should be considered, but a hygienic measure useful to reduce the spread of the SARS-COV-2 virus.

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