Simple at-home tests for the coronavirus, some that involve spitting into a small tube of solution, could be the key to expanding testing and impeding the spread of the pandemic.
One variety, paper-strip tests, are inexpensive and easy enough to make that Americans could test themselves every day. You would simply spit into a tube of saline solution and insert a small piece of paper embedded with a strip of protein. If you are infected with enough of the virus, the strip will change color within 15 minutes.
E25Bio, Sherlock Biosciences, Mammoth Biosciences, and an increasing number of academic research laboratories are in the late stages of developing paper-strip and other simple, daily Covid-19 tests. Some of the daily tests are in trials and proving highly effective.
The strips could be mass produced in a matter of weeks and freely supplied by the government to everyone in the country. The price per person would be from $1 to $5 a day, a considerable sum for the entire population, but remarkably cost effective.
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