546 | Humans |
538 | COVID-19 |
456 | Pandemics |
424 | Coronavirus Infections |
423 | Pneumonia, Viral |
416 | SARS-CoV-2 |
343 | Betacoronavirus |
144 | Female |
129 | Male |
107 | United States |
96 | Adult |
84 | Middle Aged |
71 | Aged |
51 | Telemedicine |
41 | Risk Factors |
39 | Adolescent |
38 | Young Adult |
33 | Personal Protective Equipment |
32 | Risk Assessment |
32 | Child |
31 | Infection Control |
30 | COVID-19 Testing |
29 | Surveys and Questionnaires |
29 | Aged, 80 and over |
28 | Practice Guidelines as Topic |
28 | Hospitalization |
27 | Animals |
26 | Clinical Laboratory Techniques |
24 | Comorbidity |
23 | Retrospective Studies |
23 | Infectious Disease Transmission, Patient-to-Professional |
21 | Quarantine |
21 | Health Personnel |
21 | Disease Transmission, Infectious |
21 | Cross-Sectional Studies |
20 | Consensus |
20 | COVID-19 Vaccines |
19 | Severity of Illness Index |
19 | Delivery of Health Care |
18 | Societies, Medical |
18 | Public Health |
18 | Antiviral Agents |
17 | Triage |
17 | Treatment Outcome |
17 | Clinical Trials as Topic |
17 | China |
16 | Communicable Disease Control |
15 | Viral Vaccines |
15 | Time Factors |
15 | Angiotensin-Converting Enzyme 2 |
14 | Prevalence |
14 | Patient Selection |
14 | Health Policy |
14 | Elective Surgical Procedures |
14 | Antibodies, Viral |
13 | Registries |
13 | RNA, Viral |
13 | Peptidyl-Dipeptidase A |
13 | Hydroxychloroquine |
13 | Health Services Accessibility |
13 | Coronavirus |
13 | California |
12 | Occupational Health |
12 | Intensive Care Units |
12 | Infant |
12 | Global Health |
12 | Ethnic Groups |
12 | Disease Outbreaks |
11 | Patient Safety |
11 | Infant, Newborn |
11 | Cardiovascular Diseases |
11 | Age Factors |
11 | Aerosols |
10 | Social Media |
10 | Reverse Transcriptase Polymerase Chain Reaction |
10 | Otolaryngology |
10 | Occupational Exposure |
10 | Italy |
10 | Immunoglobulin G |
10 | Healthcare Disparities |
10 | Health Knowledge, Attitudes, Practice |
10 | Head and Neck Neoplasms |
10 | Critical Care |
10 | Child, Preschool |
9 | Respiration, Artificial |
9 | Mass Screening |
9 | Lung |
9 | International Cooperation |
9 | Forecasting |
9 | Education, Medical, Graduate |
9 | Databases, Factual |
9 | Cytokines |
9 | Cross Infection |
9 | Cohort Studies |
8 | Videoconferencing |
8 | United Kingdom |
8 | Stress, Psychological |
8 | Safety Management |
8 | Real-Time Polymerase Chain Reaction |
8 | Randomized Controlled Trials as Topic |
8 | Prospective Studies |
8 | Neoplasms |
8 | Models, Statistical |
8 | Masks |
8 | Internship and Residency |
8 | Internet |
8 | Incidence |
8 | Health Status Disparities |
8 | Europe |
8 | Disease Management |
8 | Attitude of Health Personnel |
8 | Anxiety |
7 | Survival Analysis |
7 | Spike Glycoprotein, Coronavirus |
7 | Sensitivity and Specificity |
7 | Reproducibility of Results |
7 | Pregnancy |
7 | Physical Distancing |
7 | Otolaryngologists |
7 | Obesity |
7 | Nasopharynx |
7 | Immunity, Innate |
7 | Host-Pathogen Interactions |
7 | Disease Models, Animal |
7 | Diabetes Mellitus |
7 | Azithromycin |
7 | Arrhythmias, Cardiac |
7 | Angiotensin-Converting Enzyme Inhibitors |
7 | African Americans |
6 | Virus Internalization |
6 | Tomography, X-Ray Computed |
6 | Sex Factors |
6 | Risk |
6 | Prognosis |
6 | Practice Patterns, Physicians' |
6 | Pediatrics |
6 | Operating Rooms |
6 | Olfaction Disorders |
6 | North America |
6 | Mice |
6 | Mental Health |
6 | Magnetic Resonance Imaging |
6 | Inflammation |
6 | Hospitals |
6 | Hispanic Americans |
6 | Health Workforce |
6 | Government Regulation |
6 | Evidence-Based Medicine |
6 | Disinfection |
6 | Decision Making |
6 | Data Collection |
6 | Cause of Death |
6 | Case-Control Studies |
6 | Angiotensin Receptor Antagonists |
6 | American Heart Association |
6 | Advisory Committees |
5 | Vulnerable Populations |
5 | Veterans |
5 | Vaccination |
5 | Time-to-Treatment |
5 | Surgical Oncology |
5 | Surgeons |
5 | Students, Medical |
5 | Stroke |
5 | Specimen Handling |
5 | Socioeconomic Factors |
5 | Social Isolation |
5 | Severe Acute Respiratory Syndrome |
5 | SARS Virus |
5 | Respiratory Distress Syndrome |
5 | Research Design |
5 | Public Opinion |
5 | Primary Health Care |
5 | Patient Isolation |
5 | Patient Acceptance of Health Care |
5 | Oxygen Inhalation Therapy |
5 | Outcome Assessment, Health Care |
5 | Ophthalmology |
5 | Needs Assessment |
5 | Mortality |
5 | Models, Theoretical |
5 | Mobile Applications |
5 | Mental Health Services |
5 | Leadership |
5 | Intubation, Intratracheal |
5 | Internationality |
5 | Immunoglobulin M |
5 | Health Services Needs and Demand |
5 | Health Resources |
5 | European Continental Ancestry Group |
5 | Emergency Service, Hospital |
5 | Denmark |
5 | Delivery of Health Care, Integrated |
5 | Continental Population Groups |
5 | Contact Tracing |
5 | Computer Simulation |
5 | Clinical Decision-Making |
5 | Algorithms |
5 | Alanine |
5 | Adenosine Monophosphate |
4 | World Health Organization |
4 | Virus Replication |
4 | United States Food and Drug Administration |
4 | Travel |
4 | Tracheostomy |
4 | Textiles |
4 | T-Lymphocytes |
4 | Systemic Inflammatory Response Syndrome |
4 | Survival Rate |
4 | Stress Disorders, Post-Traumatic |
4 | Smell |
4 | Smartphone |
4 | Sleep |
4 | Single-Cell Analysis |
4 | Resource Allocation |
4 | Renin-Angiotensin System |
4 | Receptors, Virus |
4 | Reagent Kits, Diagnostic |
4 | Pregnancy Complications, Infectious |
4 | Population Surveillance |
4 | Patient Care |
4 | Neurology |
4 | Molecular Diagnostic Techniques |
4 | Medical Staff, Hospital |
4 | Medical Oncology |
4 | Interdisciplinary Communication |
4 | Influenza, Human |
4 | India |
4 | Immunotherapy |
4 | Immunosuppressive Agents |
4 | Immunocompromised Host |
4 | Immunization, Passive |
4 | Hypertension |
4 | Heart Diseases |
4 | HIV Infections |
4 | Gastrointestinal Diseases |
4 | Follow-Up Studies |
4 | Filtration |
4 | Exercise |
4 | Epidemiological Monitoring |
4 | Electronic Health Records |
4 | Disease Susceptibility |
4 | Diagnosis, Differential |
4 | Critical Illness |
4 | Cough |
4 | Congresses as Topic |
4 | Communication |
4 | Clinical Competence |
4 | Chronic Disease |
4 | Centers for Disease Control and Prevention, U.S. |
4 | Cardiology |
4 | Canada |
4 | COVID-19 Nucleic Acid Testing |
4 | Brain |
4 | Biomedical Research |
4 | Antibodies, Neutralizing |
4 | Ambulatory Care |
4 | Airway Management |
4 | Aging |
4 | Adaptive Immunity |
3 | Video Recording |
3 | Vaccines |
3 | Tumor Necrosis Factor-alpha |
3 | Thrombosis |
3 | Thoracic Neoplasms |
3 | Taiwan |
3 | Surgery Department, Hospital |
3 | Substance-Related Disorders |
3 | State Government |
3 | Spatial Analysis |
3 | Spain |
3 | Social Support |
3 | Social Determinants of Health |
3 | Smoking |
3 | Skull Base |
3 | Skin Diseases |
3 | Sequence Alignment |
3 | Respiratory Tract Infections |
3 | Respiratory Protective Devices |
3 | Research |
3 | Radiography, Thoracic |
3 | Public Health Administration |
3 | Protein Binding |
3 | Premature Birth |
3 | Poverty |
3 | Politics |
3 | Point-of-Care Testing |
3 | Pneumonia |
3 | Physicians |
3 | Patient Care Management |
3 | Particle Size |
3 | Parents |
3 | Otorhinolaryngologic Surgical Procedures |
3 | Orthopedic Procedures |
3 | Organoids |
3 | Organizational Innovation |
3 | Organ Transplantation |
3 | Odds Ratio |
3 | Occupational Diseases |
3 | Nervous System Diseases |
3 | Neck |
3 | Myasthenia Gravis |
3 | Monitoring, Physiologic |
3 | Models, Molecular |
3 | Models, Biological |
3 | Minority Groups |
3 | Machine Learning |
3 | Longitudinal Studies |
3 | Logistic Models |
3 | Intersectoral Collaboration |
3 | Internet Access |
3 | Interleukin-6 |
3 | Interferons |
3 | Inpatients |
3 | Infectious Disease Transmission, Professional-to-Patient |
3 | Implosive Therapy |
3 | Immunoglobulin A |
3 | Humidity |
3 | Hospitals, Pediatric |
3 | High-Throughput Screening Assays |
3 | Health Surveys |
3 | Health Priorities |
3 | Health Communication |
3 | Health Care Surveys |
3 | Health Care Rationing |
3 | Health Behavior |
3 | Headache |
3 | HIV-1 |
3 | Guidelines as Topic |
3 | Guideline Adherence |
3 | Glucocorticoids |
3 | Global Burden of Disease |
3 | Geography |
3 | Genome, Viral |
3 | General Surgery |
3 | Fever |
3 | Feasibility Studies |
3 | Extracorporeal Membrane Oxygenation |
3 | Equipment Reuse |
3 | Equipment Design |
3 | Endoscopy, Gastrointestinal |
3 | Emergency Medical Services |
3 | Electrophysiologic Techniques, Cardiac |
3 | Electroencephalography |
3 | Education, Medical |
3 | Education, Distance |
3 | Dyspnea |
3 | Drug Therapy, Combination |
3 | Drug Interactions |
3 | Drug Evaluation, Preclinical |
3 | Drug Design |
3 | Diabetes Mellitus, Type 1 |
3 | Depression |
3 | Decontamination |
3 | Communicable Diseases, Emerging |
3 | Combined Modality Therapy |
3 | Cognitive Behavioral Therapy |
3 | Chloroquine |
3 | Chiropractic |
3 | Cardiopulmonary Resuscitation |
3 | Cardiac Imaging Techniques |
3 | Blood Donors |
3 | Biomedical Technology |
3 | Biomarkers |
3 | Binding Sites |
3 | Base Sequence |
3 | B-Lymphocytes |
3 | Asthma |
3 | Appointments and Schedules |
3 | Antirheumatic Agents |
3 | Antigens, Viral |
3 | Anesthesiology |
3 | Ambulatory Care Facilities |
3 | Air Microbiology |
3 | Age Distribution |
3 | Africa |
3 | Academic Medical Centers |
3 | A549 Cells |
2 | Workforce |
2 | Wisconsin |
2 | Wearable Electronic Devices |
2 | Vitamin D |
2 | Visitors to Patients |
2 | Viral Proteins |
2 | Viral Envelope Proteins |
2 | Vaping |
2 | Vaccines, Attenuated |
2 | Uveitis |
2 | User-Computer Interface |
2 | Urology |
2 | United States Department of Veterans Affairs |
2 | Uncertainty |
2 | Transcription, Genetic |
2 | Thoracic Surgery |
2 | Tertiary Care Centers |
2 | Telecommunications |
2 | Taste Disorders |
2 | Systems Biology |
2 | Surgical Procedures, Operative |
2 | Speech-Language Pathology |
2 | Software |
2 | Social Class |
2 | Sleep Wake Disorders |
2 | Skin |
2 | Simulation Training |
2 | Shock |
2 | Sexual and Gender Minorities |
2 | Serologic Tests |
2 | Seroepidemiologic Studies |
2 | Serine Endopeptidases |
2 | Sepsis |
2 | Sedentary Behavior |
2 | Security Measures |
2 | Schools |
2 | Risk Management |
2 | Rheumatologists |
2 | Return to Work |
2 | Retina |
2 | Respiratory Tract Diseases |
2 | Respiratory System |
2 | Respiratory Insufficiency |
2 | Republic of Korea |
2 | Reference Values |
2 | Reconstructive Surgical Procedures |
2 | Radiology |
2 | Radiography |
2 | Radiation Oncology |
2 | Race Factors |
2 | ROC Curve |
2 | RNA-Seq |
2 | RNA Viruses |
2 | Quality Improvement |
2 | Publishing |
2 | Public Health Surveillance |
2 | Protein Domains |
2 | Protective Clothing |
2 | Propensity Score |
2 | Program Development |
2 | Professional-Patient Relations |
2 | Privacy |
2 | Prisoners |
2 | Predictive Value of Tests |
2 | Precision Medicine |
2 | Practice Management, Medical |
2 | Polypropylenes |
2 | Polymerase Chain Reaction |
2 | Policy Making |
2 | Point-of-Care Systems |
2 | Physician-Patient Relations |
2 | Physical Examination |
2 | Phenotype |
2 | Personnel, Hospital |
2 | Personnel Staffing and Scheduling |
2 | Personnel Selection |
2 | Periodicals as Topic |
2 | Patient Preference |
2 | Patient Outcome Assessment |
2 | Oximetry |
2 | Otorhinolaryngologic Diseases |
2 | Orthopedics |
2 | Organizational Policy |
2 | Office Visits |
2 | Occupational Stress |
2 | Nutritional Support |
2 | Nucleocapsid Proteins |
2 | New York |
2 | Nanoparticles |
2 | N95 Respirators |
2 | Myocardial Infarction |
2 | Myeloid Cells |
2 | Mycobacterium tuberculosis |
2 | Multivariate Analysis |
2 | Mucocutaneous Lymph Node Syndrome |
2 | Mothers |
2 | Microscopy, Electron, Scanning |
2 | Mental Disorders |
2 | Medicare |
2 | Measles-Mumps-Rubella Vaccine |
2 | Mandatory Programs |
2 | Lymphocytes |
2 | Lupus Erythematosus, Systemic |
2 | Locomotion |
2 | Local Government |
2 | Liver |
2 | Limit of Detection |
2 | Leukocytes, Mononuclear |
2 | Laryngoscopy |
2 | Laryngectomy |
2 | Laboratories |
2 | Knowledge |
2 | Killer Cells, Natural |
2 | Investigational New Drug Application |
2 | Intensive Care Units, Neonatal |
2 | Insurance, Health |
2 | Insurance Coverage |
2 | Information Dissemination |
2 | Influenza A Virus, H1N1 Subtype |
2 | Infectious Disease Transmission, Vertical |
2 | Income |
2 | In Vitro Techniques |