Salaah

What is twilight

Q: What is the definition of twilight? In beheshti zewar English it says the redness on the western horizon, when that disappears then esha time comes in. However some kitaabs mention the twilight according to imam Abu hanifa as the whiteness after the redness. Which is correct. Why is it mentioned as redness in the beheshti zewar, would this not make our esha time early like the shafis etc.

Suffering from herpes

Q: I have unfortunately have been diagnosed with genital herpes and oral herpes. I read on websites that it can spread through the skin even if there is no sore or fluid. What should I do in terms of praying Salaah because I touch my face and then touch the carpet? How should my contact with people be and what happens if I spread the disease to others. Do I get a sin for that? What do I do to all the people that I had spread the disease to previously due to handshakes (if even the disease spreads that way), sharing food and other ways?