PBS has a documentary on the Spanish Flu where it discusses how both masks and vaccines didn't work.
"All of America, it seemed, put on masks. At last, many thought, they were safe. But masks didn't help. They were thin and porous -- no serious restraint to tiny microbes. It was like trying to keep out dust with chicken wire."
"A resolution shot through Congress, giving the Public Health Service a million dollars to fight the flu. Biochemists around the country worked feverishly to develop a vaccine. [...] But even vaccines didn't help."
https://www.pbs.org/wgbh/americanexperience/films/influenza/#transcripthttp://archive.today/IYjlo
A 2017 study found that not even N95 masks provided protection against SARS.
WH Kellogg studied this back in 1920 and found that masks didn't work.
https://ajph.aphapublications.org/doi/abs/10.2105/AJPH.10.1.34
PBS has a documentary on the Spanish Flu where it discusses how both masks and vaccines didn't work.
"All of America, it seemed, put on masks. At last, many thought, they were safe. But masks didn't help. They were thin and porous -- no serious restraint to tiny microbes. It was like trying to keep out dust with chicken wire." "A resolution shot through Congress, giving the Public Health Service a million dollars to fight the flu. Biochemists around the country worked feverishly to develop a vaccine. [...] But even vaccines didn't help." https://www.pbs.org/wgbh/americanexperience/films/influenza/#transcript http://archive.today/IYjlo
A 2017 study found that not even N95 masks provided protection against SARS.
http://archive.today/NghAW
There is a lot more in this archive: https://pastebin.com/5xEMa5P7
Also here: pdmj.org
excellent, thank you.