I’m available for both online or onsite discussion.
Your comment is very helpful. Here is my thought taking account of your suggestion, let me know my understanding is correct.
If the coverage of the needle safety intervention is 50% and the efficacy is 90%, then the updated transmission rate would be:
beta = beta_0 * (1 – 0.5 * 0.9) = 0.45 * beta_0
I can adjust the values of x and e to represent different levels of coverage and efficacy. I can also explore the effects of different combinations of interventions.
At the same time a few more question pop up in my mind
How does the intervention affect the transmission rate?
A needle safety intervention might reduce the transmission rate by reducing the number of people who share needles. A universal precautions intervention might reduce the transmission rate by reducing the risk of exposure to contaminated blood.
How does the intervention affect the recovery rate?
A treatment intervention might increase the recovery rate by helping people to recover from the infection more quickly.
Are my thought along the same line of your suggestions?