I think we need to wait 2/3 weeks to see what comes of these new cases and where hospitalization and death rates are then. If they are relatively low as they are now, then we can proceed cautiously as we are now. If those numbers start jumping, then there will be serious cause for concern as the colder months hit and everyone will be spending more time indoors.
Yes. I think it would have been better to loosen up before people get indoors
From Muge Cevik. Paper out reviewing transmission dynamics.
*Transmission is complex and multidimensional & depends on many factors: contact pattern, individual factors, environment, & socioeconomic factors are at play
*Sustained contact drives clusters and infections --> close family/friends and gatherings of them the highest risk
*70% of cases do not go on to infect anyone else
*80% of new infections come from 20% of cases
*Window of infectiousness is short, 5-7 days around symptom onset
*While asymptomatic patients can transmit the virus to others, evidence suggests that asymptomatic index cases transmit to fewer secondary cases. Attack rates are highly correlated with symptom severity
*Transmission is affected by host factors, including host defense mechanisms and age. For instance, given the same exposure, susceptibility to infection increases with age, higher in > 60yo compared to younger or middle-aged adults.
*Contact tracing studies suggest an almost 20x higher risk of transmission indoors compared with outdoor environments.
*Prolonged indoor contact in a crowded and poorly ventilated environment increases the risk of transmission substantially.
*Global figures suggest that COVID-19 pandemic is strongly shaped by structural inequities, adverse living and working conditions
*Households in socioeconomically deprived areas are more likely to be overcrowded, increasing the risk of transmission within the household. These disparities also shape the strong geographic heterogeneities observed in the burden of cases and deaths.