I read years ago(1977) that it was NOT the 1918 flu that killed people. It was the Opportunistic PNEUMONIA that then infected and killed them.
The DR. who wrote about this in 1977, said that same flu would never be that bad again as we had antibiotics to fight the pneumonia.
I had read that over half of the people dropped from pneumonia. Aided by mask wearing.
Interestingly, HCQ, zinc, and Doxycycline was an early Covid therapeutic regime that got poo-pooed by government public health authorities. The Indians are seeing great results with Ivermectin, zinc, Doxycycline, and D3.
Under $2 in India:
Ziverdo Kit
https://www.rxindia.com/medicines/medicines-by-therapeutic-class/covid-19/ziverdo-kit/
Ziverdo Kit Contains Zinc Acetate 50 mg, Doxycycline 100 mg & Ivermectin 12 mg Dispersible Tablets. It is currently indicated in the first line treatment for COVID-19 positive patients.
Referring to a pre-official release of a randomised controlled trial using Ivermectin in three doses in primary contacts of COVID-19, It is said that 93 % of primary contacts who received Ivermectin did not develop any symptoms and 58 % of primary contacts who did not receive Ivermectin did progress to have symptoms of the pandemic.
“Quadruple Therapy includes Ivermectin 12 mg one dose, Doxycycline 100 mg once a day for four days, Zinc 50 mg once a day for four days and Vitamin D3 once a week. Ivermectin, Doxycycline and Zinc are to be repeated every 14 days and Vitamin D3 every week with blood levels monitored. The synergistic effect of these medicine acts to prevent viral multiplication and also stop the virus from entering human cells. Thomas Borody, an Australian gastroenterologist who is known for curing peptic ulcers with triple antibiotic therapy, has revealed that one block in South America that received Ivermectin combination prophylaxis did not contract coronavirus infection while others did,” he said.