As the COVID-19 outbreak keeps on advancing, examinations have been attracted to flu. Both reason respiratory malady, yet there are significant contrasts between the two infections and how they spread. This has significant implications for general health estimates that can be executed to react to every infection.
How are COVID-19 and influenza viruses similar?
Initially, COVID-19 and influenza viruses have a comparable disease outline. That is, the two of them cause respiratory infection, which presents as a wide scope of ailment from asymptomatic or gentle through to serious malady and demise.
Besides, both viruses are transmitted by contact, droplets and fomites. Accordingly, a similar public health measures, for example, hand hygiene and great respiratory behaviour (coughing into your elbow or into a tissue and promptly discarding the tissue), are significant moves all can take to prevent infection.
How fast are COVID-19 and influenza viruses transmitted?
The speed of transmission is a significant purpose of distinction between the two viruses. Influenza has a shorter middle incubation period (the time from infection to appearance of symptoms ) and a shorter sequential stretch (the time between progressive cases) than COVID-19 infection. The sequential interval for COVID-19 virus is assessed to be 5-6 days, while for influenza virus , the sequential stretch is 3 days. This means that influenza can spread quicker than COVID-19.
Further, transmission in the initial 3-5 days of illness, or possibly pre-indicative transmission – transmission of the virus before the presence of manifestations – is a major driver of transmission for influenza.
Interestingly, while we are discovering that there are people who can shed COVID-19 infection 24-48 hours preceding indication beginning, at present, this does not appear to be a major driver of transmission.
The number of secondary infections created from one infected separate – is comprehended to be somewhere in the range of 2 and 2.5 for COVID-19 infection, higher than for flu. Be that as it may, gauges for both COVID-19 and flu infections are very setting and time-explicit, making direct correlations progressively troublesome.
Children are significant drivers of influenza virus transmission in the community. For COVID-19 virus, introductory information shows that children are less influenced than grown-ups and that clinical attack rates in the 0-19 age bunch are low.
Further primer information from family unit transmission concentrates in China propose that kids are tainted from grown-ups, as opposed to the other way around.
While the range of symptoms for the two viruses is comparative, the fraction with extreme disease appears to be different. For COVID-19, information to date propose that 80% of diseases are mild or asymptomatic, 15% are extreme contamination, requiring oxygen and 5% are basic contaminations, requiring ventilation. These divisions of extreme and basic disease would be higher than what is watched for influenza infection.
Mortality for COVID-19 appears higher than for influenza, particularly seasonal influenza. While the genuine mortality of COVID-19 will set aside some effort to completely comprehend, the data we have so far indicate that the crude mortality ratio
(the quantity of reported deaths partitioned by the announced cases) is between 3-4%, the disease death rate (the quantity of detailed deaths separated by the quantity of contaminations) will be lower. For seasonal influenza, mortality is generally well underneath 0.1%. In any case, mortality is to an enormous degree dictated by access to and nature of health services.