**COVID-19 Resource Centre:** Since January 2020, Elsevier has established a COVID-19 resource centre on Elsevier Connect, providing free information in English and Mandarin about the novel coronavirus. Elsevier has granted permission to make all COVID-19-related research available in PubMed Central and other public repositories, allowing unrestricted reuse and analysis with proper attribution. **Mass Masking in the COVID-19 Epidemic:** As the spread of COVID-19 outside China accelerates, there is a call for policymakers to reconsider the role of masking. While the World Health Organization (WHO) recommends against wearing masks in community settings due to lack of evidence, the authors argue that the absence of evidence should not equate to ineffectiveness. Masking can help reduce stigma and intercept transmission links from asymptomatic carriers. The global shortage of disposable surgical masks has led to mass panic, and governments must prepare for this and explore sustainable alternatives. **Mitigating the Effects of Home Confinement on Children:** The Chinese government's decision to close schools due to the COVID-19 outbreak has resulted in over 220 million children being confined at home. While online education efforts are commendable, there are concerns about the negative impacts on children's physical and mental health. Prolonged school closures can lead to reduced physical activity, longer screen time, irregular sleep patterns, and weight gain. Psychological stressors such as fear, frustration, and lack of social interaction can also affect children. The government, NGOs, communities, schools, and parents need to address these issues through effective online learning, healthy lifestyle promotion, and psychosocial support. **Has China Faced Only a Herald Wave of SARS-CoV-2?** Mathematical models suggest that 50-60% of the population should eventually be infected with SARS-CoV-2. However, the observed attack rate in China remains far below this threshold. Serosurveys can help determine if the current outbreak is a herald wave or if a larger wave is yet to come. These surveys can provide precise estimates of infection rates and inform the risk of future epidemic waves. **Full Spectrum of COVID-19 Severity:** Chaolin Huang and colleagues reported the clinical features of patients infected with SARS-CoV-2, highlighting the full spectrum of severity, from asymptomatic to severe cases. This information is crucial for understanding the disease and guiding public health responses.**COVID-19 Resource Centre:** Since January 2020, Elsevier has established a COVID-19 resource centre on Elsevier Connect, providing free information in English and Mandarin about the novel coronavirus. Elsevier has granted permission to make all COVID-19-related research available in PubMed Central and other public repositories, allowing unrestricted reuse and analysis with proper attribution. **Mass Masking in the COVID-19 Epidemic:** As the spread of COVID-19 outside China accelerates, there is a call for policymakers to reconsider the role of masking. While the World Health Organization (WHO) recommends against wearing masks in community settings due to lack of evidence, the authors argue that the absence of evidence should not equate to ineffectiveness. Masking can help reduce stigma and intercept transmission links from asymptomatic carriers. The global shortage of disposable surgical masks has led to mass panic, and governments must prepare for this and explore sustainable alternatives. **Mitigating the Effects of Home Confinement on Children:** The Chinese government's decision to close schools due to the COVID-19 outbreak has resulted in over 220 million children being confined at home. While online education efforts are commendable, there are concerns about the negative impacts on children's physical and mental health. Prolonged school closures can lead to reduced physical activity, longer screen time, irregular sleep patterns, and weight gain. Psychological stressors such as fear, frustration, and lack of social interaction can also affect children. The government, NGOs, communities, schools, and parents need to address these issues through effective online learning, healthy lifestyle promotion, and psychosocial support. **Has China Faced Only a Herald Wave of SARS-CoV-2?** Mathematical models suggest that 50-60% of the population should eventually be infected with SARS-CoV-2. However, the observed attack rate in China remains far below this threshold. Serosurveys can help determine if the current outbreak is a herald wave or if a larger wave is yet to come. These surveys can provide precise estimates of infection rates and inform the risk of future epidemic waves. **Full Spectrum of COVID-19 Severity:** Chaolin Huang and colleagues reported the clinical features of patients infected with SARS-CoV-2, highlighting the full spectrum of severity, from asymptomatic to severe cases. This information is crucial for understanding the disease and guiding public health responses.