By Dylan Matthews
The outbreak of Covid-19, a coronavirus-caused illness that originated in Wuhan, China, and has since spread to most of the world, is one of the most serious public health crises in decades. It has spread far wider than Ebola did in 2014, and the World Health Organization has designated it a pandemic.
As of March 11, there have been more than 125,000 reported cases, more than 4,600 deaths worldwide, and more than 1,200 reported cases and 29 deaths in the US, according to Johns Hopkins’s tracker; its count is usually up to date and worth bookmarking as the crisis progresses.
The situation on the ground is evolving incredibly quickly, and it’s impossible to synthesize everything we know into clean, intelligible charts. But we do know a fair bit about how bad the outbreak is, what the disease does, and what controlling and ultimately ending the outbreak will look like.
With that in mind, here are nine charts that help explain the Covid-19 coronavirus crisis.
1) The virus is spreading rapidly
As of this writing, the Covid-19 caseload is rising rapidly day to day, but here’s where things stood as of March 8. The vast majority of reported cases are still in China, where the outbreak began, but whereas the number of new Chinese cases is falling, the number of new international cases is rising, indicating that the epicenter of the problem is shifting from China to new places like Italy.
Note that the huge spike in new cases was due to improved data reporting from China; there was not one particularly bad day in the middle of February.
2) Know the symptoms
The symptoms of Covid-19 vary from case to case, but the most common ones in China, from February data, are fever and dry cough (which are each seen in a majority of cases), fatigue, and sputum (the technical term for thick mucus coughed up from the respiratory tract).
If you have a fever and dry cough, that could be a good reason to get yourself tested if possible.
3) Death rates in China have declined over time
One glimmer of hope in this story is that Chinese medical authorities appeared to get better at treating infections and preventing death as the outbreak proceeded. “Even the first and hardest-hit province, Hubei, saw its death rate tumble as public health measures were strengthened and clinicians got better at identifying and treating people with the disease,” Vox’s Julia Belluz explains.
The rate didn’t go down on its own; China took drastic, even authoritarian measures to lock down affected areas and contain the virus’s spread so that the medical system was not overwhelmed.
4) Older people in China have been at the greatest risk of dying from Covid-19
The Spanish flu of 1918-’19, the most horrific pandemic in modern times, focused mainly on the young. It had biological similarities to a flu pandemic in the 1830s that gave some older people in the 1910s limited immunity.
Covid-19 is not like that. So far, deaths in China have been concentrated among older adults, who have weaker immune systems on average than younger people and have a higher rate of chronic illness. People of all ages with chronic medical conditions are also at higher risk. The risk of death is real for younger people as well, but older people have the most reason to take care.
Original article appeared on Vox.com. Click to read More.