Over one million people have quit smoking since the Coronavirus pandemic hit, according to a 10,000-person study from Action on Smoking and Health (ASH). "Of those who had quit in the previous four months, 41% said it was in direct response to Coronavirus." In parallel, University College London (UCL)'s Smoking Toolkit Study has been asking 1,000 monthly about their smoking habits. They found that more people have quit smoking in the first half of 2020 than in any year since 2007, when its survey began. In the UK, about 7 million people were smokers in 2019. Data from 2.4 million UK participants using the Zoe Covid Symptom Tracker app suggests smokers are 14% more likely than non-smokers to develop virus symptoms of fever, persistent cough and shortness of breath. This aligns with research in the US that found Coronavirus patients in hospitals were 1.8 times more likely to die.