➡️3.5% chance of asymptomatic person vs 12.8% for symptomatic person to infect a close contact
➡️Chance of one household member infecting another is significantly higher when exposure is 5+ days vs 5 or less days
@neil_ferguson@dr_anne_cori@SRileyIDD@MarcBaguelin@IlariaDorigatti
Summary 1/8 - Self-sustaining human-to-human transmission of novel coronavirus (2019-nCov) is the only plausible explanation of the scale of the outbreak in Wuhan. We estimate that on average each case infected 2.6 (uncertainty range: 1.5-3.5) other people up to 18th January 2020
Our estimate at 4,000 cases is more than double the past estimate due to increase of number of cases outside China. This should not be interpreted as implying the outbreak has doubled in size.
🔰imperial.ac.uk/mrc-global-inf…
Thread 1/10: On January 17 we released estimates of the scale of the nCoV-19 outbreak in China based on an analysis of the number of cases detected outside mainland China.