… hand sanitiser was created by a university student? In 1966, Lupe Hernandez was a nursing student in California, in the United States. She was worried that not all doctors would have access to soap and water. She observed that if she could keep alcohol in gel form it would be easier to keep the product anywhere.

… not every hand sanitiser is effective against the new coronavirus? The Federal Chemistry Council (CFQ) recommends using only those that are 70% alcohol, because this ratio guarantees that microorganisms will not survive.

…it is not a good idea to make hand sanitisers at home? While hand sanitisers with a ratio smaller than 70% might not be effective, mixtures with more than 70% alcohol could even cause burns. That is why it is very important for the ratio to be the right one. 

… according to the Centers for Disease Control and Prevention (CDC) in the United States, you should rub your hands with hand sanitiser until it dries completely?

Sources: CDC, Federal Chemistry Council (CFQ), Galileu magazine, Marie Claire magazine, and UOL

Questions
1) Which of the alternatives is wrong?
a) Making hand sanitisers at home might not be effective.
b) Hand sanitisers are not effective against the new coronavirus.
c) When using hand sanitisers, rub your hands until they are dry.
d) The product was invented in 1966.

2) What protection measures are you taking against the new coronavirus?

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