Why didn’t the MERS and SARS strains of Coronavirus become a pandemic?

2020-04-20 7:04 pm

回答 (13)

2020-04-20 9:19 pm
The spread of SARS and MERs were stopped early after only a few thousand cased through testing, tracing contacts and isolating the infected.  That is harder to do for Covid-19 because it is contagious before symptoms present.  Covid-19 could have been contained if we had immediately implemented mass testing and lockdown.  That worked in China and S.Korea and is currently being tried in India.
2020-04-20 8:32 pm
Because asymptomatic carriers of SARS and MERS were not contagious. And because symptomatic patients were not as contagious.
2020-04-20 7:14 pm
COVID-19 is so much more contagious, and infected people are contagious even before they start to feel sick. 
2020-04-20 7:08 pm
Never heard of mers. I remember sars from 2003 and all I saw was a sign about it in hospital when I hurt my back and a couple of articles in the paper but no fuss. Then no vaccine for sars was found but it just died on it's own. Sars didn't really do anything.
2020-04-22 4:24 pm
They were too strong and came on too fast. Unlike Covid where people can walk around spreading it for 2 weeks before they show symptoms enough to realise they have it, Mers and SARS came on hard and fast and you would likely be bedridden in 12 hours, possibly dead in 3-4 days if you caught it, they were too strong and weakened people before they could go and spread it too much
2020-04-21 9:53 am
Diana has best answer
2020-04-21 8:43 am
Unlike MERS and SARS. COVID 19 can be in your system and you will not see any symptoms. However, you can still spread the virus to others through droplets,  objects, and even air (yes it can linger around in the air for a while). People get this virus and don't know they have it and innocently spread it to others. In NYC Westchester county. There were two individuals who had the virus. They went to crowded events because they didn't feel sick. They ended up spreading it to hundreds of people. The governor had to step in and lock up the whole city to contain the spread. All it took was two people in crowds to lock up the city. This is how easy it spreads.
2020-04-24 2:52 am
This is worse, cause its from bats, i am here if you need to talk
2020-04-22 4:31 am
MERS and SARS strains of coronavirus didn't become a pandemic, because some strains of a virus can be worse and more wide-spread than other strains of the same virus.
2020-04-21 4:17 pm
When the Flu , MERS , SARS viruses expposed to Gamma Radiation in the process of making vaccines . Most of the weak viruses will die , but somes strong viruses can tolorated the Gamma Radiation and mutated to Super Viruses . Even as viruses , they do have their own defend mechanism and their DNA have the ability to heal themselves . Once healed they become Super Viruses .  This case possible for Covid-19 . That why vaccines can be dangerous !!!!!

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