The basic reproduction number, or the basic reproductive ratio, denoted R0 and pronounced
“R naught,” [nɑːt] is the reproduction number that indicates how contagious an infectious disease is. R0 tells you the average number of people who will contract a contagious disease from one person with that disease. If no one has been vaccinated or previously infected, an R0 less than 1 causes less than one new infection, and the disease will decline and die out eventually. If R0 is 1, the disease will stay alive and stable but won’t spread rapidly or widely. However, if R0 is greater than 1, each infected person causes more than one new infection, and therefore, the disease will be transmitted between people, and could trigger an outbreak or epidemic. For example, the R0 of measles or chickenpox is over 10, smallpox is around 5, common cold is between 2 and 3, and the SEASONAL flu is usually less than 2. However, the R0 of COVID-19 is at least 2 and possibly 3-5.
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Write why the coronavirus is so dangerous to humans in six to eight sentences by Friday
☆ Need to explain what R0 or the
reproduction number if mentioned. effective medicine/vaccine, seasonal
flu
Higher reproduction number
Another problem is that the outbreak of the coronavirus doesn’t seem to be seasonal as the virus spread to the southern hemisphere where March and April are summer months.
Also, while symptoms of the seasonal flu appear within a few days, it takes more than several days before noticeable symptoms appear to the infected person.
In addition, a flu vaccine could weaken the symptoms, no effective vaccine for the novel virus has been developed or approved yet.
All in all, coronavirus is more contagious, long-lasting, and dangerous to humans than the seasonal flu.
That’s why many cities have been locked down and strict measures have been taken by the national and local governments for more than weeks, even months.
There are three reasons why COVID-19 is so dangerous to humans.
返信削除The first is the value of R0.
If R0 is less than 1, the diseases will become weak and will disappear, but if R0 is more than 1, the diseases will be infected between people and may occurs cluster infection and pandemic. A person who was infected the COVID-19 infects about 2 to 3 other people on avarage.
The second is the incubation period of the virus.
The incubation period with COVID-19 is about 3 to 14 days, which is longer than the flu, and symptoms occurs 4 to 5 days after the infection, so it is impossible to prevent contact with other people.
The third is about the COVID-19 vaccine.
It is not yet available, but if the vaccine becomes available, many lives can be saved.
Well explained.
削除Is COVID-19 seasonal?
There are four reasons to explain why coronavirus is much more dangerous that the flu.
返信削除First, coronavirus has stronger contagiousness than the flu. Each flu infected person infect about 1 to 2 people, but each coronavirus infected person infects 2 to 3 people.
Second, coronavirus kills people at a much faster late than the flu which means it has high mortality.
Third, coronavirus infected people usually feel sick four or five days after they infected, so they can move around and spread the virus longer.
Fourth, the vaccine of coronavirus haven’t discovered, so it’s hard to prevent infection or reduce symptoms.
Therefore, coronavirus is much more dangerous than the flu.
Well explained.
削除Is COVID-19 seasonal?
There are four reasons why the COVID-19 is so dangerous.
返信削除First, coronavirus kill at a much faster race than the flu.
Second, the incubation period with COVID-19 is about two weeks, which is longer than the flu, and some people don't have any symptoms although they're infected, so it is impossible to prevent them from connecting others.
Third, we can get the flu vaccines but not a coronavirus which means nobody has antibody against the virus.
Fourth, the patients' conditions can get very serious rapidly.
In my personal opinion, we have a lot of anxieties what the future of economy, employment and so on are going like and we need to fight against these kind of problems hardly and patiently.
It doesn't cause death directly but it has a huge effect in our lives.
Well explained.
削除Is COVID-19 seasonal? What about the reproduction rate?
There are four points that shows COVID 19 is so dangerous.
返信削除First, R0 which measures the degree of infection is high. R0 of COVID 19 is higher than flu so, it could easily trigger an outbreak or epidemic.
Second, COVID 19 doesn’t delay infection in warm climate. The fact that COVID 19 infected in warm Southern Hemisphere proves it.
Third, incubation period of COVID 19 is long so, there are many people who was infected with COVID 19 without symptoms may unknowingly infect others.
Fourth, there’s no option to get a vaccine and it will publicly available at least a few months later.
Therefore, COVID 19 has strong infectivity.
Well explained.
削除Explain what reproduction number is.
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削除There are four reasons why the coronavirus is so dangerous to humans.
返信削除First,coronavirus is much more contagious than the flu.
While the flu infects an average of about 1.28 other people,the novel coronavirus infects an average of about 2 to 3 other people.
Second, coronavirus has killed at a much faster rate.
The flu killed an average of about 331 people per day but the coronavirus killed people an average of more than 739 people per day in the US.
Third, coronavirus can be spread for many days without symptoms.
With the flu, symptoms often showing up within two days so if we get flu, we can avoid contact with others but with the coronavirus,the symptoms typically appear within four or five days.
Lastly, we can get a flu vaccine but not a coronavirus vaccine so if we have a coronavirus vaccine and get a coronavirus vaccine then later catch coronavirus,the symptoms are usually less severe.
Well explained.
削除Try writing a in shorter sentence to avoid making grammar errors.
There are five reasons why the coronavirus is so dangerous to humans.
返信削除First, it can trigger an outbreak or epidemic R0 of coronavirus is more than R0 of the flu.
Second, it may not disappear in summer because it is a new virus.
Third, it has killed at a much faster rate than the flu, so the coronavirus is more harmful to humans.
Fourth, the incubation period of the coronavirus is so long that many people who was infected with it without symptoms may contact others.
Fifth, we can't get a coronavirus vaccine, so we are weak against it.
Therefore, the coronavirus is more dangerous than the flu.
Well explained.
削除Explain what R0 is.
There are three reasons that the novel coronavirus is so dangerous to humans.
返信削除First, coronavirus has killed at a much faster rate.
739 people died per day in us that is two times faster than the flu.
Second, coronavirus needs about three to fourteen days to appear symptoms. So people who are infected not to realize symptoms and be able to spread to others.
Third, we don’t have any vaccine for coronavirus now. It’ll take more time to publish.
That’s why the coroavirus is so dagerous to humans.
Well explained.
削除What about the reproduction number?