They have developed mRNA vaccines actually. In fact more than one.
https://www.scmp.com/business/...
https://www.nature.com/article...

Yes, they did vaccinate their population. They have a higher vaccination rate than the US but with inactivated virus vaccine. And also months ago so immunity would have waned.
https://www.statista.com/stati...

US life expectancy at birth is now at 76.1 years, versus 77.1 for China.
And here's a US vs China comparison of per capita spending on healthcare in 2018. It was over 15 times then. I think it will be higher by now

China's first mRNA vaccine plant to start operation in October. China’s top mRNA contender is ready to go. And SoftBank just led a cash infusion pushing it over the $1B line.

Well, in Manaus they thought they had herd immunity because over 70% had antibodies to Covid-19 and carried on as if the danger had passed. But they were very wrong.

BMJ: Is Manaus the final nail in the coffin for natural herd immunity?
https://www.bmj.com/content/37...

How one city missed warning after warning until its health system collapsed
https://www.cnn.com/2021/01/25...

Tests in recovered patients found false positives, not reinfections, experts say
"South Korea’s infectious disease experts said Thursday that dead virus fragments were the likely cause of over 260 people here testing positive again for the novel coronavirus days and even weeks after marking full recoveries. Oh Myoung-don, who leads the central clinical committee for emerging disease control, said the committee members found little reason to believe that those cases could be COVID-19 reinfections or reactivations, which would have made global efforts to contain the virus much more daunting. The tests detected the ribonucleic acid of the dead virus, said Oh, a Seoul National University hospital doctor, at a press conference Thursday held at the National Medical Center."

Washington Post article explains clearly that Trump's administration had people embedded in WHO and received real time updates So it is a lie that the administration did not know everything that the WHO knew from the very start.

"15 officials from Trump's administration were embedded with the WHO in Geneva, working full time, hand-in-glove with the organization on the virus from the very first day China disclosed the outbreak to the world, Dec. 31. At least six other U.S. officials at WHO headquarters dedicated most of their time to the virus, and two others worked remotely with the WHO on covid-19 full time. In the weeks that followed, they and other U.S. government scientists engaged in all major deliberations and decisions at the WHO on the novel coronavirus, had access to all information, and contributed significantly to the world body’s conclusions and recommendations."

So there is no way the WHO would have been able to withhold or delay the release of essential information.

No! No! Bacteria have been evolving antibiotic resistance and things are getting quite desperate, especially in hospital settings. Newer and more potent antibiotics are urgently needed. Methicillin-resistant Staphylococcus aureus (MRSA), vancomycin-resistant Enterococcus (VRE) and multi-drug-resistant Mycobacterium tuberculosis (MDR-TB) are well-known examples of superbugs. The latest are NDM-1 bacteria that have acquired the ability to defeat carbapenems, the antibiotics of last resort when all else fails. And these are failing too. There is an ongoing arms race between bacteria and antibiotics and it has always been so since the introduction of penicillin. The bacteria are getting ahead and we need new antibiotics since yesterday.

Maybe not? This from a recent World Bank report:
"As of October 1, 2014, over 2.9 billion passengers are estimated to have taken a trip in a China Rail - High Speed train (called CRH services), with traffic growing from 128 million in 2008 to 672 million in 2013, or about 39 percent growth per annum since 2008. In 2013, 530 million of those CRH trips took place on passenger dedicated HSR lines. In 2013, China HSR lines carried slightly more HSR passenger-km (214 billion) than the rest of the world combined. This represented about 2.5 times the HSR passenger-km of Japan, the second largest country in terms of HSR traffic. These are substantial numbers for a system that is still in its early days."

Also, a personal informed opinion here

I would add a fourth. Thus the list would be Paid, in-app-purchases, free with ads, FREE. FREE would be really free. Not even ads.

But what about the Fourth Crusade when the Byzantines themselves were attacked and Constantinople - the richest city in Christendom - was sacked, looted and raped by the western Crusaders? It was so awful, shameful and painful that 800 years later Pope John Paul II thought it necessary to apologize for it. There was nothing "good" about that one.

Yes, it is. See Hon Hai Precision Industry Co., Ltd. (Foxconn)

That will create the ultimate anti-Apple. Amazon's store is the only one right now that can compete with Apple's App store and if that becomes the de facto Google Android store, that will mean the first real competitor to the iDevice/App Store ecosystem. And Google's cloud + Amazon's cloud will be mother of all clouds too.