One thing is clear though from what's happened in Brazil: It's a contagious disease. To make a short story long:
https://www.nytimes.com/interactive/2020/07/25/world/americas/coronavirus-brazil-amazon.html
the virus is taking an exceptionally high toll on the Amazon region and the people who have depended on its abundance for generations.
In Brazil, the six cities with the highest coronavirus exposure are all on the Amazon River, according to an expansive new study from Brazilian researchers that measured antibodies in the population.
The epidemic has spread so quickly and thoroughly along the river that in remote fishing and farming communities like Tefé, people have been as likely to get the virus as in New York City, home to one of the world’s worst outbreaks.
“It was all very fast,” said Isabel Delgado, 34, whose father, Felicindo, died of the virus shortly after falling ill in the small city of Coari. He had been born on the river, raised his family by it and built his life crafting furniture from the timber on its banks.
In the past four months, as the epidemic traveled from the biggest city in the Brazilian Amazon, Manaus, with its high-rises and factories, to tiny, seemingly isolated villages deep in the interior, the fragile health care system has buckled under the onslaught.
Cities and towns along the river have some of the highest deaths per capita in the country — often several times the national average. In Manaus, there were periods when every Covid ward was full and 100 people were dying a day, pushing the city to cut new burial grounds out of thick forest. Grave diggers lay rows of coffins in long trenches carved in the freshly turned earth.
Down the river, hammocks have become stretchers, carrying the sick from communities with no doctors to boat ambulances that careen through the water. In remote reaches of the river basin, medevac planes land in tiny airstrips sliced into the lush landscape only to find that their patients died while waiting for help.
The virus is exacting an especially high toll on Indigenous people, a parallel to the past. Since the 1500s, waves of explorers have traveled the river, seeking gold, land and converts — and later, rubber, a resource that helped fuel the Industrial Revolution, changing the world. But with them, these outsiders brought violence and diseases like smallpox and measles, killing millions and wiping out entire communities.
“This is a place that has generated so much wealth for others,” said Charles C. Mann, a journalist who has written extensively on the history of the Americas, “and look at what’s happening to it.”
Indigenous people have been roughly six times as likely to be infected with the coronavirus as white people, according to the Brazilian study, and are dying in far-flung river villages untouched by electricity.
...they won't believe it.
With all the fuss about vaccines, I wanted to know where to buy chemicals. But like they have learned ''the hard way'' in Brazil, not so simple:
https://www.bing.com/search?q=where+to+buy+chemicals+if+you+want+to+make+vaccine
EXPLAINER: Why it's hard to make vaccines and boost supplies
https://apnews.com/article/why-its-hard-to-make-vaccines-explained.
2021-01-28 · Two Brazilian research institutes plan to make millions of doses of the AstraZeneca and Sinovac vaccines but have been set back by unexplained delays in shipments of key ingredients from China. And Bottazzi said the world simultaneously has to keep up production of vaccines against polio, measles, meningitis and other diseases that still threaten even in the midst of the pandemic.