| 335 | Humans |
| 325 | Coronavirus Infections |
| 315 | Pneumonia, Viral |
| 236 | Betacoronavirus |
| 146 | China |
| 106 | Disease Outbreaks |
| 52 | Female |
| 50 | Male |
| 47 | Adult |
| 46 | Pandemics |
| 45 | Middle Aged |
| 44 | Travel |
| 43 | Animals |
| 36 | Public Health |
| 30 | SARS Virus |
| 29 | Severe Acute Respiratory Syndrome |
| 26 | Global Health |
| 26 | Aged |
| 25 | Genome, Viral |
| 24 | Lung |
| 24 | Coronavirus |
| 23 | Phylogeny |
| 22 | Tomography, X-Ray Computed |
| 22 | Fever |
| 21 | Young Adult |
| 20 | Infection Control |
| 20 | Antiviral Agents |
| 19 | Child |
| 18 | Zoonoses |
| 17 | World Health Organization |
| 17 | Cough |
| 16 | United States |
| 16 | Chiroptera |
| 15 | Risk Factors |
| 15 | Retrospective Studies |
| 15 | Republic of Korea |
| 15 | Radiography, Thoracic |
| 15 | Population Surveillance |
| 15 | Middle East Respiratory Syndrome Coronavirus |
| 14 | Communicable Diseases, Emerging |
| 14 | Adolescent |
| 12 | Europe |
| 12 | Epidemics |
| 11 | Spike Glycoprotein, Coronavirus |
| 11 | Practice Guidelines as Topic |
| 11 | Peptidyl-Dipeptidase A |
| 11 | Health Personnel |
| 10 | Real-Time Polymerase Chain Reaction |
| 10 | Patient Isolation |
| 10 | Delivery of Health Care |
| 10 | Contact Tracing |
| 10 | Aged, 80 and over |
| 9 | Time Factors |
| 9 | Severity of Illness Index |
| 9 | Mass Screening |
| 9 | Infant |
| 9 | Civil Defense |
| 8 | Viral Vaccines |
| 8 | Ritonavir |
| 8 | Risk Assessment |
| 8 | Respiration, Artificial |
| 8 | Quarantine |
| 8 | Models, Theoretical |
| 8 | Lopinavir |
| 8 | Information Dissemination |
| 8 | Health Planning |
| 8 | Dyspnea |
| 8 | Disease Transmission, Infectious |
| 8 | Disease Reservoirs |
| 8 | Child, Preschool |
| 8 | Biomedical Research |
| 7 | United Kingdom |
| 7 | Prognosis |
| 7 | Pneumonia |
| 7 | Internationality |
| 7 | Influenza, Human |
| 7 | Infectious Disease Transmission, Patient-to-Professional |
| 7 | Communication |
| 7 | Australia |
| 6 | Virus Replication |
| 6 | Viral Proteins |
| 6 | Reverse Transcriptase Polymerase Chain Reaction |
| 6 | Receptors, Virus |
| 6 | RNA, Viral |
| 6 | Mortality |
| 6 | Mental Health Services |
| 6 | Infectious Disease Incubation Period |
| 6 | Hospitalization |
| 6 | Forecasting |
| 6 | Emergencies |
| 6 | Disease Susceptibility |
| 6 | Disease Progression |
| 6 | Disaster Planning |
| 6 | Critical Care |
| 6 | Communicable Disease Control |
| 6 | Anxiety |
| 6 | Air Travel |
| 5 | Viral Load |
| 5 | Travel Medicine |
| 5 | Social Conditions |
| 5 | Respiratory Tract Infections |
| 5 | Respiratory Distress Syndrome, Adult |
| 5 | Public Health Surveillance |
| 5 | Pregnancy |
| 5 | Personal Protective Equipment |
| 5 | Mental Health |
| 5 | Medical History Taking |
| 5 | Intensive Care Units |
| 5 | Infant, Newborn |
| 5 | Health Services Accessibility |
| 5 | Fatigue |
| 5 | Family Health |
| 5 | Diagnosis, Differential |
| 5 | Cross Infection |
| 5 | Critical Illness |
| 5 | Comorbidity |
| 5 | Clinical Trials as Topic |
| 5 | Antibodies, Viral |
| 5 | Antibodies, Monoclonal |
| 5 | Amino Acid Sequence |
| 5 | Alanine |
| 4 | Vulnerable Populations |
| 4 | Viral Envelope Proteins |
| 4 | Uncertainty |
| 4 | Taiwan |
| 4 | Stress, Psychological |
| 4 | Singapore |
| 4 | Sequence Alignment |
| 4 | Sensitivity and Specificity |
| 4 | Seasons |
| 4 | Science |
| 4 | Respiratory Insufficiency |
| 4 | Protein Structure, Tertiary |
| 4 | Politics |
| 4 | Periodicals as Topic |
| 4 | Patient Care Planning |
| 4 | Myalgia |
| 4 | Italy |
| 4 | Interprofessional Relations |
| 4 | Incidence |
| 4 | Guidelines as Topic |
| 4 | Evidence-Based Medicine |
| 4 | Emigration and Immigration |
| 4 | Drugs, Chinese Herbal |
| 4 | Drug Repositioning |
| 4 | Drug Evaluation, Preclinical |
| 4 | Drug Discovery |
| 4 | Drug Combinations |
| 4 | Commerce |
| 4 | Colorectal Neoplasms |
| 4 | Chloroquine |
| 4 | Biomarkers |
| 4 | Basic Reproduction Number |
| 4 | Asymptomatic Infections |
| 4 | Antibodies, Neutralizing |
| 4 | Age Factors |
| 4 | Age Distribution |
| 4 | Access to Information |
| 3 | Whole Genome Sequencing |
| 3 | Virus Diseases |
| 3 | Universities |
| 3 | Transportation |
| 3 | Thailand |
| 3 | Surveys and Questionnaires |
| 3 | State Medicine |
| 3 | Social Media |
| 3 | Ships |
| 3 | Risk |
| 3 | Ribonucleotides |
| 3 | Research |
| 3 | Recombination, Genetic |
| 3 | Public Health Practice |
| 3 | Protective Clothing |
| 3 | Pregnancy Complications, Infectious |
| 3 | Occupational Exposure |
| 3 | Nucleocapsid Proteins |
| 3 | Molecular Diagnostic Techniques |
| 3 | Models, Genetic |
| 3 | Melia azedarach |
| 3 | Masks |
| 3 | Laboratories |
| 3 | Japan |
| 3 | Internet |
| 3 | International Cooperation |
| 3 | Infectious Disease Transmission, Vertical |
| 3 | Infections |
| 3 | Hygiene |
| 3 | Host-Pathogen Interactions |
| 3 | Host Specificity |
| 3 | Health Policy |
| 3 | Emergency Medical Services |
| 3 | Drug Design |
| 3 | Databases, Genetic |
| 3 | Cytochrome P-450 CYP3A Inhibitors |
| 3 | Cross-Sectional Studies |
| 3 | Consensus |
| 3 | Asymptomatic Diseases |
| 3 | Africa |
| 3 | Adaptation, Psychological |
| 2 | Virus Shedding |
| 2 | Virus Attachment |
| 2 | Virulence |
| 2 | Viral Nonstructural Proteins |
| 2 | Vero Cells |
| 2 | Vaccines |
| 2 | Travel-Related Illness |
| 2 | Telemedicine |
| 2 | Social Support |
| 2 | Sleep |
| 2 | Sex Distribution |
| 2 | Sequence Analysis, Protein |
| 2 | Rural Population |
| 2 | Respiratory System |
| 2 | Respiratory Sounds |
| 2 | Recombinant Proteins |
| 2 | Racism |
| 2 | Public Policy |
| 2 | Proteome |
| 2 | Prevalence |
| 2 | Pregnancy Outcome |
| 2 | Predictive Value of Tests |
| 2 | Plasma |
| 2 | Pharynx |
| 2 | Pharyngitis |
| 2 | Patient Safety |
| 2 | Patient Education as Topic |
| 2 | Patient Discharge |
| 2 | Patient Care |
| 2 | Nucleosides |
| 2 | Nucleic Acid Amplification Techniques |
| 2 | Noninvasive Ventilation |
| 2 | New Zealand |
| 2 | Mutation Rate |
| 2 | Models, Statistical |
| 2 | Models, Molecular |
| 2 | Models, Animal |
| 2 | Microscopy, Electron, Transmission |
| 2 | Microbial Viability |
| 2 | Medicine, Chinese Traditional |
| 2 | Machine Learning |
| 2 | Macau |
| 2 | Lung Neoplasms |
| 2 | Leukocyte Count |
| 2 | Latin America |
| 2 | International Health Regulations |
| 2 | Intensive Care Units, Neonatal |
| 2 | Inpatients |
| 2 | Indoles |
| 2 | Immunity |
| 2 | Hospitals |
| 2 | Hospitals, Psychiatric |
| 2 | Holidays |
| 2 | High-Throughput Nucleotide Sequencing |
| 2 | Health Workforce |
| 2 | Germany |
| 2 | Genomics |
| 2 | Genetic Variation |
| 2 | Genetic Engineering |
| 2 | Feces |
| 2 | Feasibility Studies |
| 2 | Fear |
| 2 | Eutheria |
| 2 | European Union |
| 2 | Equipment and Supplies, Hospital |
| 2 | Epitopes, T-Lymphocyte |
| 2 | Epitopes, B-Lymphocyte |
| 2 | Epithelial Cells |
| 2 | Epidemiological Monitoring |
| 2 | Environmental Exposure |
| 2 | Emergency Service, Hospital |
| 2 | Editorial Policies |
| 2 | Diarrhea |
| 2 | Developing Countries |
| 2 | Depression |
| 2 | Decision Making |
| 2 | Cysteine Endopeptidases |
| 2 | Counseling |
| 2 | Cluster Analysis |
| 2 | Clinical Laboratory Techniques |
| 2 | Chlorocebus aethiops |
| 2 | Centers for Disease Control and Prevention, U.S. |
| 2 | Cell Line |
| 2 | Bronchoalveolar Lavage Fluid |
| 2 | Brazil |
| 2 | Blood Chemical Analysis |
| 2 | Binding Sites |
| 2 | Base Sequence |
| 2 | Anti-Inflammatory Agents, Non-Steroidal |
| 2 | Anti-Bacterial Agents |
| 2 | Angiotensin II |
| 2 | Alphacoronavirus |
| 2 | Algorithms |
| 2 | Airports |
| 2 | Adrenal Cortex Hormones |
| 2 | Adenosine Monophosphate |
| 1 | Zika Virus |
| 1 | Zika Virus Infection |
| 1 | Xenophobia |
| 1 | Writing |
| 1 | Workflow |
| 1 | Web Browser |
| 1 | Weather |
| 1 | Water-Electrolyte Balance |
| 1 | Watchful Waiting |
| 1 | Waste Management |
| 1 | Voluntary Health Agencies |
| 1 | Vitamins |
| 1 | Virus Physiological Phenomena |
| 1 | Virus Internalization |
| 1 | Virus Activation |
| 1 | Virology |
| 1 | Viral Tropism |
| 1 | Viral Structural Proteins |
| 1 | Video Recording |
| 1 | Veterinary Medicine |
| 1 | Veterinarians |
| 1 | Vaccination |
| 1 | Truth Disclosure |
| 1 | Triage |
| 1 | Treatment Refusal |
| 1 | Treatment Outcome |
| 1 | Trace Elements |
| 1 | Tongue |
| 1 | Thorax |
| 1 | Thoracic Surgical Procedures |
| 1 | Teaching |
| 1 | TNF Receptor-Associated Factor 6 |
| 1 | Switzerland |
| 1 | Students |
| 1 | Spouses |
| 1 | South America |
| 1 | Solubility |
| 1 | Societies, Medical |
| 1 | Social Stigma |
| 1 | Social Isolation |
| 1 | Social Distance |
| 1 | Social Discrimination |
| 1 | Social Capital |
| 1 | Snakes |
| 1 | Smartphone |
| 1 | Small Molecule Libraries |
| 1 | Sleep Wake Disorders |
| 1 | Sincalide |
| 1 | Sign Language |
| 1 | Shock |
| 1 | Serum Albumin |
| 1 | Sequence Homology, Nucleic Acid |
| 1 | Sequence Analysis |
| 1 | Sequence Analysis, DNA |
| 1 | Sentinel Surveillance |
| 1 | Self Efficacy |
| 1 | Self Care |
| 1 | Security Measures |
| 1 | Search Engine |
| 1 | Schools |
| 1 | Saudi Arabia |
| 1 | Salmonella |
| 1 | Risk Management |
| 1 | Rest |
| 1 | Respiratory Mechanics |
| 1 | Resilience, Psychological |
| 1 | Research Personnel |
| 1 | Reproduction |
| 1 | Reproducibility of Results |
| 1 | Renin-Angiotensin System |
| 1 | Remote Consultation |
| 1 | Rehabilitation |
| 1 | Reference Standards |
| 1 | Receptors, Interleukin-2 |
| 1 | Receptor, Angiotensin, Type 2 |
| 1 | Radiologists |
| 1 | Radiography |
| 1 | ROC Curve |
| 1 | RNA Replicase |
| 1 | Qualitative Research |
| 1 | Pyrazines |
| 1 | Publications |
| 1 | Public Health Administration |
| 1 | Protein Structure, Quaternary |
| 1 | Protein Domains |
| 1 | Protein Conformation |
| 1 | Protein Binding |
| 1 | Protease Inhibitors |
| 1 | Prospective Studies |
| 1 | Professional Role |
| 1 | Problem Solving |
| 1 | Prejudice |
| 1 | Pregnancy Trimester, Third |
| 1 | Polysaccharides |
| 1 | Polymerase Chain Reaction |
| 1 | Polyethylene Glycols |
| 1 | Political Activism |
| 1 | Policy Making |
| 1 | Point-of-Care Systems |
| 1 | Placenta |
| 1 | Physicians |
| 1 | Pharmacists |
| 1 | Pharmaceutical Preparations |
| 1 | Personnel, Hospital |
| 1 | Peptide Fragments |
| 1 | Peer Review, Research |
| 1 | Pediatrics |
| 1 | Patient Selection |
| 1 | Patient Advocacy |
| 1 | Paramyxoviridae Infections |
| 1 | Panic |
| 1 | Palliative Care |
| 1 | Outpatients |
| 1 | Oseltamivir |
| 1 | Oropharynx |
| 1 | Organizational Innovation |
| 1 | Operations Research |
| 1 | Open Access Publishing |
| 1 | Oligonucleotides |
| 1 | Oligonucleotide Array Sequence Analysis |
| 1 | Occupational Diseases |
| 1 | Nutritional Support |
| 1 | Nutritional Status |
| 1 | Nursing Care |
| 1 | Nurse Midwives |
| 1 | Nose |
| 1 | Nigeria |
| 1 | Neuraminidase |
| 1 | Neoplasms |
| 1 | National Institutes of Health (U.S.) |
| 1 | National Health Programs |
| 1 | Nasopharynx |
| 1 | Naja naja |
| 1 | Myocardium |
| 1 | Multicenter Studies as Topic |
| 1 | Mouth |
| 1 | Mouth Mucosa |
| 1 | Monitoring, Physiologic |
| 1 | Molecular Targeted Therapy |
| 1 | Molecular Epidemiology |
| 1 | Molecular Dynamics Simulation |
| 1 | Models, Chemical |
| 1 | Midwifery |
| 1 | Mice |
| 1 | Metapneumovirus |
| 1 | Mental Disorders |
| 1 | Mediterranean Region |
| 1 | Medical Waste |
| 1 | Medical Waste Disposal |
| 1 | Medical Staff |
| 1 | Medical Records |
| 1 | Maternal Exposure |
| 1 | Massage |
| 1 | Mammals |
| 1 | Malaria |
| 1 | Macrolides |
| 1 | Lymphocyte Count |
| 1 | Lung Injury |
| 1 | Lung Diseases |
| 1 | Livestock |
| 1 | Liver |
| 1 | Lipids |
| 1 | Likelihood Functions |
| 1 | Length of Stay |
| 1 | Leadership |
| 1 | Laparoscopy |
| 1 | Language |
| 1 | Laboratory Animal Science |
| 1 | Kinetics |
| 1 | Interviews as Topic |
| 1 | Interpersonal Relations |
| 1 | International Law |
| 1 | Internal Medicine |
| 1 | Interleukin-6 |
| 1 | Interinstitutional Relations |
| 1 | Interferons |
| 1 | Interferon-beta |
| 1 | Interferon-alpha |
| 1 | Interatrial Block |
| 1 | Integrative Oncology |
| 1 | Influenza A virus |
| 1 | Inflammation |
| 1 | Industry |
| 1 | India |
| 1 | Immunotherapy |
| 1 | Immunologic Factors |
| 1 | Immunocompromised Host |
| 1 | Immunization, Passive |
| 1 | Immunity, Innate |
| 1 | Immune Sera |
| 1 | Immune Evasion |
| 1 | Iceland |
| 1 | Hydroxymethylglutaryl-CoA Reductase Inhibitors |
| 1 | Hydroxychloroquine |
| 1 | Housing, Animal |
| 1 | Hospitals, Private |
| 1 | Hong Kong |
| 1 | Homologous Recombination |
| 1 | Homes for the Aged |
| 1 | Home Care Services |
| 1 | History |
| 1 | Histocompatibility Antigens Class I |
| 1 | Heterocyclic Compounds, 4 or More Rings |
| 1 | Hepatitis C |
| 1 | Hepatitis B |
