Novel Covid-19 was first identified in the area of Wuhan, China in December 2019; it is a new strain of coronavirus that has not been previously identified in humans. Novel coronavirus is different than other coronavirus strains (e.g. 229E, NL63, OC43, HKU1) identified in humans and causing mild symptoms such as common cold.
We cannot predict the length of the outbreak nor how it will evolve. This is a new pathogen, of which we still have limited knowledge. For example, we do not know whether its spread in the community will be limited during the summer, as is the case with seasonal flu.
Coronaviruses infect animals; however some of them also infect humans. Rarely, strains identified in animals can be transmitted to humans, with the exception of MERS, SARS, and currently, Covid-19.
Although the virus comes from animals, it can be transmitted between humans, and it can easily spread in the community. A spread in the community means the identification of confirmed cases for which the source of transmission is unknown.
Strictly practicing social distancing while implementing other measures of self-protection may limit the rate of spread in the community.
The virus is transmitted from human to human, therefore, a person with signs and symptoms compatible with Covid-19 infection may transmit the disease to other people. This is why isolation at the hospital or at home is advised for patients with symptoms, depending on the severity of their clinical condition. Patients are not considered infective and can therefore be removed from isolation when ALL CRITERIA BELOW are met:
Quarantine is an isolation measure used for individuals or a group of people possibly exposed to a pathogen but not showing any symptoms; the aim of isolation is to prevent transmission. Quarantine duration is the same as the disease incubation period, which is the time between last exposure to the pathogen and display of symptoms. Covid-19 incubation period is 14 days. Persons who are taken off quarantine can no longer transmit the disease.
(refrigerated or frozen food included)
Covid-19 is transmitted from human to human through respiratory droplets (e.g. cough, sneeze, runny nose). There are no indications of transmission through food. However, it is necessary to wash your hands with soap and water
It may be possible that a person can be infected with the disease by touching surfaces contaminated by the novel Covid-19 coronavirus and then touching their own mouth, nose or eyes; however, this is not the primary way of transmission.
Nevertheless, due to the virus poor survival on surfaces, transmission through food or packages that have been handled in the past days or weeks in ambient temperature or under freezing or deep-freezing conditions is considered unlikely.
We do not yet know if weather improvement and higher temperatures may limit the spread of novel coronavirus Covid-19. Other viruses, such as those of seasonal influenza or common cold are easier to spread during the cold months; however, this doesn’t rule out the possibility of infection during warmer periods.
A spread in the community means the identification of confirmed cases for which the source or way of transmission is unknown.
If you have come in close contact with a confirmed case of new coronavirus COVID-19, you should stay at home for a period of 14 days from last contact and monitor your health. If you show symptoms compatible with Covid-19 infections such as
you must contact your doctor immediately
High risk groups consist of elder people as well as people of any age with an underlying chronic condition such as cardiovascular and lung diseases, diabetes mellitus, immunodeficiency.
People in high risk groups must systematically implement all measures for preventing the transmission and spread of the new coronavirus Covid-19. If you belong to a high-risk group, you should do the following:
Using a mask can prevent the disease from spreading from patients to healthy individuals. Therefore, masks are used only for the protection of
Healthy individuals are not advised to use masks.
Given that SARS-Cov2 cannot survive on surfaces for a long period of time, the risk of transmission from products or packages that have travelled for days or weeks in ambient temperature is low. Coronaviruses are mainly transmitted through respiratory droplets.
There are currently no indications suggesting SARS– CoV2 transmission through contact with products/ packages imported from affected areas, nor are there any reported cases associated with such a way of transmission.
Based on the available data, the virus can cause mild flu symptoms such as:
In severe cases, patients may develop pneumonia, acute respiratory distress syndrome, sepsis and septic sock and death. People in high-risk groups (e.g. elders, patients with heart conditions, diabetes mellitus, liver or lung conditions) are more likely to develop severe symptoms of the disease.
If you show symptoms such as fever, cough and difficulty breathing, you should stay at home and contact your doctor immediately.
Laboratory investigation for the new coronavirus Covid-19 is advised for:
When lab tests for the new coronavirus Covid-19 come out negative, this means that the virus has not been detected in the sample. This can happen at the early stages of the disease. During the symptomatic phase and while the disease progresses, lab tests may come out positive. If a patient with symptoms compatible with Covid-19 infection is submitted to laboratory investigation that comes out negative, then the disease is attributable to other causes and not Covid-19.
There is no designated treatment for the disease. Treatment is symptomatic, aiming to relieve symptoms (e.g. fever, difficulty breathing). International literature on the use of antiviral drugs against the new coronavirus is very limited and comes almost exclusively from China. In vitro and in vivo studies demonstrate a possible therapeutic action of certain pharmaceutical substances against coronaviruses resembling the new coronavirus SARS-CoV-2. However, there are currently no sufficient data from randomized clinical studies in humans with the use of control groups, supporting the administration of any drug in patients with suspected or confirmed infection with the new coronavirus SARS-CoV-2. According to the 6th edition of Guidelines by China’s National Health Commission on the empirical treatment of COVID-19, the following antiviral drugs are suggested: inhaled interferon-alpha (IFN-α), lopinavir/ritonavir, chloroquine phosphate, ribavirin and arbidol (broad-spectrum antiviral drug).
At the moment, there is no available vaccine for COVID-19. This is why timely diagnosis and implementation of measures against the spread of the disease are of vital importance. Several pharmaceutical companies are working towards developing a vaccine; however it will take a long time until their work is finalized.
The influenza vaccine does not protect against COVID-19. However, given that we are currently going through the seasonal flu peak, the influenza vaccine is the best way to protect ourselves against the seasonal flu.