Because the coronavirus targets the lungs, doctors and public health officials are adding new urgency to their longstanding plea for smokers and vapers to quit — or at least slow down.

Both habits can compromise lung function. Early Covid-19 studies have shown that cigarette smokers in particular are more susceptible to the infection and suffer more severe cases. Doctors are raising similar concerns about vapers.

If you have ever considered quitting, right now would be a most excellent time to make a determined effort to do so. Pulmonologists suggest that combining two common methods — the nicotine patch plus either a nicotine gum or lozenge — can boost your chances of success. There are a multitude of apps and online resources to connect people to support groups and good advice.

Here is a sampling:

Phone and texting services

1-800-QUIT-NOW (1-800-784-8669) A free national phone service that routes the caller to the state line associated with caller’s area code. Hours vary.