| 2000 | Humans |
| 2000 | Cats |
| 1999 | Animals |
| 994 | Dogs |
| 858 | Cat Diseases |
| 525 | Dog Diseases |
| 512 | Female |
| 397 | Male |
| 237 | Pets |
| 222 | COVID-19 |
| 200 | SARS-CoV-2 |
| 192 | Adult |
| 141 | Zoonoses |
| 132 | Retrospective Studies |
| 127 | Child |
| 121 | Middle Aged |
| 118 | Surveys and Questionnaires |
| 117 | Phylogeny |
| 114 | Mice |
| 110 | Seroepidemiologic Studies |
| 107 | Adolescent |
| 105 | Risk Factors |
| 104 | Cattle |
| 103 | Cross-Sectional Studies |
| 101 | Prevalence |
| 100 | Aged |
| 98 | Anti-Bacterial Agents |
| 97 | Young Adult |
| 92 | Swine |
| 88 | Allergens |
| 87 | Toxoplasma |
| 85 | Veterinarians |
| 84 | Ownership |
| 81 | Pandemics |
| 78 | Child, Preschool |
| 74 | Brazil |
| 71 | Horses |
| 70 | Feces |
| 63 | Toxoplasmosis |
| 58 | Animals, Wild |
| 57 | Rats |
| 55 | Antibodies, Protozoan |
| 54 | Bites and Stings |
| 54 | Antibodies, Viral |
| 53 | Sporotrichosis |
| 52 | United States |
| 48 | Pregnancy |
| 47 | Animals, Domestic |
| 46 | United Kingdom |
| 46 | Sporothrix |
| 45 | Sheep |
| 45 | Prospective Studies |
| 45 | Hypersensitivity |
| 44 | Coronavirus Infections |
| 42 | Infant |
| 41 | Rabies |
| 41 | Genotype |
| 41 | Enzyme-Linked Immunosorbent Assay |
| 40 | China |
| 39 | Mammals |
| 39 | Immunoglobulin E |
| 37 | Asthma |
| 36 | Treatment Outcome |
| 36 | Rabbits |
| 36 | Ferrets |
| 35 | RNA, Viral |
| 35 | Microbial Sensitivity Tests |
| 34 | Immunoglobulin G |
| 33 | Human-Animal Bond |
| 32 | Pneumonia, Viral |
| 32 | Disease Models, Animal |
| 32 | Animal Welfare |
| 31 | Spike Glycoprotein, Coronavirus |
| 31 | Aged, 80 and over |
| 30 | Toxoplasmosis, Animal |
| 30 | Mutation |
| 30 | Hospitals, Animal |
| 30 | Disease Outbreaks |
| 29 | Iran |
| 29 | Chiroptera |
| 28 | Japan |
| 28 | Goats |
| 28 | Chickens |
| 27 | Veterinary Medicine |
| 27 | Diet |
| 26 | Toxocariasis |
| 26 | Public Health |
| 26 | Escherichia coli |
| 26 | Case-Control Studies |
| 26 | Betacoronavirus |
| 26 | Behavior, Animal |
| 26 | Angiotensin-Converting Enzyme 2 |
| 25 | Quality of Life |
| 25 | One Health |
| 25 | Biomarkers |
| 24 | Incidence |
| 24 | Animal Feed |
| 23 | Toxocara |
| 23 | Species Specificity |
| 23 | Immunodeficiency Virus, Feline |
| 23 | Bartonella henselae |
| 23 | Antifungal Agents |
| 23 | Antibodies, Neutralizing |
| 22 | Students |
| 22 | Skin |
| 22 | Parasites |
| 22 | Immunoglobulin M |
| 21 | Thailand |
| 21 | Neoplasms |
| 21 | Leukemia Virus, Feline |
| 21 | Cohort Studies |
| 21 | Antiviral Agents |
| 20 | Staphylococcal Infections |
| 20 | Skin Tests |
| 20 | Rabies Vaccines |
| 20 | Polymerase Chain Reaction |
| 20 | Obesity |
| 20 | Mink |
| 20 | HEK293 Cells |
| 20 | Genome, Viral |
| 20 | Cell Line |
| 19 | Pasteurella Infections |
| 19 | Genetic Variation |
| 19 | Escherichia coli Infections |
| 19 | Environmental Exposure |
| 19 | Education, Veterinary |
| 19 | Ecosystem |
| 19 | Coronavirus, Feline |
| 18 | Sensitivity and Specificity |
| 18 | Reproducibility of Results |
| 18 | Phlebovirus |
| 18 | Genomics |
| 18 | Deer |
| 18 | Breast Neoplasms |
| 18 | Anti-Infective Agents |
| 17 | RNA, Ribosomal, 16S |
| 17 | Pasteurella multocida |
| 17 | Lung |
| 17 | Infant, Newborn |
| 17 | Drug Resistance, Bacterial |
| 17 | Cricetinae |
| 17 | Coinfection |
| 17 | Cat-Scratch Disease |
| 17 | Brain |
| 17 | Amino Acid Sequence |
| 16 | Whole Genome Sequencing |
| 16 | Spain |
| 16 | Severe Fever with Thrombocytopenia Syndrome |
| 16 | Rhinitis, Allergic |
| 16 | Protein Binding |
| 16 | Prognosis |
| 16 | Health Knowledge, Attitudes, Practice |
| 16 | Germany |
| 16 | Food Hypersensitivity |
| 16 | Cardiomyopathy, Hypertrophic |
| 16 | Calicivirus, Feline |
| 15 | Virus Replication |
| 15 | Vaccination |
| 15 | Phenotype |
| 15 | Pain |
| 15 | Influenza, Human |
| 15 | Host Specificity |
| 15 | Horse Diseases |
| 15 | Flea Infestations |
| 15 | Feeding Behavior |
| 15 | Disease Reservoirs |
| 15 | Carcinoma, Squamous Cell |
| 15 | Birds |
| 15 | Bartonella |
| 14 | Staphylococcus |
| 14 | Real-Time Polymerase Chain Reaction |
| 14 | Multilocus Sequence Typing |
| 14 | Models, Animal |
| 14 | Methicillin-Resistant Staphylococcus aureus |
| 14 | Magnetic Resonance Imaging |
| 14 | Longitudinal Studies |
| 14 | Glycoproteins |
| 14 | DNA, Protozoan |
| 14 | Bartonella Infections |
| 14 | Australia |
| 14 | Algorithms |
| 14 | Air Pollution, Indoor |
| 13 | Virulence |
| 13 | Ultrasonography |
| 13 | Tomography, X-Ray Computed |
| 13 | Tinea |
| 13 | Renal Insufficiency, Chronic |
| 13 | Oocysts |
| 13 | Liver |
| 13 | Family Characteristics |
| 13 | Europe |
| 13 | Dermatitis, Atopic |
| 13 | DNA |
| 13 | Ctenocephalides |
| 12 | Ovariectomy |
| 12 | Microsporum |
| 12 | Inflammation |
| 12 | Hysterectomy |
| 12 | HIV Infections |
| 12 | Foxes |
| 12 | Feline Infectious Peritonitis |
| 12 | Evolution, Molecular |
| 12 | Emotions |
| 12 | Echocardiography |
| 12 | Cross Reactions |
| 12 | Cattle Diseases |
| 12 | Canada |
| 12 | Attitude |
| 11 | Trypanosoma cruzi |
| 11 | Tigers |
| 11 | Ticks |
| 11 | Sequence Analysis, DNA |
| 11 | Seasons |
| 11 | Rabies virus |
| 11 | Post-Exposure Prophylaxis |
| 11 | Pilot Projects |
| 11 | Parasitic Diseases, Animal |
| 11 | Mental Health |
| 11 | Mammary Neoplasms, Animal |
| 11 | Malaysia |
| 11 | Italy |
| 11 | Insect Vectors |
| 11 | Hospitals, Teaching |
| 11 | Drug Resistance, Multiple, Bacterial |
| 11 | Diarrhea |
| 11 | Creatinine |
| 11 | Cities |
| 11 | Chagas Disease |
| 11 | Bacteria |
| 10 | beta-Lactamases |
| 10 | Viral Zoonoses |
| 10 | Swine Diseases |
| 10 | Social Behavior |
| 10 | Skin Neoplasms |
| 10 | Siphonaptera |
| 10 | Rodentia |
| 10 | Rickettsia |
| 10 | Receptors, Virus |
| 10 | Peptidyl-Dipeptidase A |
| 10 | Orthomyxoviridae Infections |
| 10 | New York |
| 10 | Motivation |
| 10 | Livestock |
| 10 | Leptospirosis |
| 10 | Leishmania infantum |
| 10 | Kidney |
| 10 | Itraconazole |
| 10 | Immunohistochemistry |
| 10 | Hepadnaviridae |
| 10 | Guinea Pigs |
| 10 | Gene Expression Regulation |
| 10 | France |
| 10 | Felis |
| 10 | Enterobacteriaceae |
| 10 | Dust |
| 10 | Diabetes Mellitus |
| 10 | Desensitization, Immunologic |
| 10 | Dermatomycoses |
| 10 | Dander |
| 10 | Computer Simulation |
| 10 | Colombia |
| 10 | Clinical Competence |
| 10 | Antibodies, Monoclonal |
| 10 | Aging |
| 9 | Viral Vaccines |
| 9 | Turkey |
| 9 | Toxocara canis |
| 9 | Tick-Borne Diseases |
| 9 | Signal Transduction |
| 9 | Seizures |
| 9 | Saliva |
| 9 | Rotavirus |
| 9 | Pregnant Women |
| 9 | Pregnancy Complications, Parasitic |
| 9 | Poland |
| 9 | Pain Measurement |
| 9 | Norovirus |
| 9 | Muscle, Skeletal |
| 9 | Microbiota |
| 9 | Meat |
| 9 | Leishmaniasis, Visceral |
| 9 | Ixodes |
| 9 | Hair |
| 9 | Gram-Negative Bacterial Infections |
| 9 | Genetic Predisposition to Disease |
| 9 | Farms |
| 9 | Epilepsy |
| 9 | Disease Susceptibility |
| 9 | DNA, Viral |
| 9 | Chlorocebus aethiops |
| 9 | Caregivers |
| 9 | Carcinoma |
| 9 | Capnocytophaga |
| 9 | Bunyaviridae Infections |
| 9 | Anesthesia |
| 9 | Amino Acids |
| 9 | Age Factors |
| 8 | Virus Shedding |
| 8 | Virulence Factors |
| 8 | Vero Cells |
| 8 | Urinary Tract Infections |
| 8 | T-Lymphocytes |
| 8 | Sus scrofa |
| 8 | Staphylococcus aureus |
| 8 | South Africa |
| 8 | Sequence Alignment |
| 8 | Rotavirus Infections |
| 8 | Republic of Korea |
| 8 | Recombinant Proteins |
| 8 | RNA |
| 8 | Pyroglyphidae |
| 8 | Protein Domains |
| 8 | Poultry |
| 8 | Polymorphism, Single Nucleotide |
| 8 | Perception |
| 8 | New Zealand |
| 8 | Netherlands |
| 8 | Models, Molecular |
| 8 | Mexico |
| 8 | Macaca mulatta |
| 8 | Leukemia, Feline |
| 8 | Larva |
| 8 | Insulin |
| 8 | India |
| 8 | Hong Kong |
| 8 | Heart Failure |
| 8 | Giardiasis |
| 8 | Felidae |
| 8 | Diabetes Mellitus, Type 2 |
| 8 | Cryptosporidium |
| 8 | Cryptosporidiosis |
| 8 | Coronavirus |
| 8 | Communication |
| 8 | Castration |
| 8 | Caliciviridae Infections |
| 8 | COVID-19 Vaccines |
| 8 | Blood Glucose |
| 8 | Blood Donors |
| 8 | Bacterial Proteins |
| 8 | Bacteremia |
| 8 | Antibodies, Helminth |
| 8 | Animal Technicians |
| 7 | Wounds and Injuries |
| 7 | Wound Infection |
| 7 | Urinary Bladder |
| 7 | Trichophyton |
| 7 | Temperature |
| 7 | Soil |
| 7 | Sepsis |
| 7 | Self Report |
| 7 | Rural Population |
| 7 | Registries |
| 7 | Raccoons |
| 7 | Protozoan Proteins |
| 7 | Proteomics |
| 7 | Panthera |
| 7 | Opisthorchis |
| 7 | Opisthorchiasis |
| 7 | Mouth Neoplasms |
| 7 | Molecular Docking Simulation |
| 7 | Mesenchymal Stem Cells |
| 7 | Macaca |
| 7 | Leptospira |
| 7 | Leishmaniasis |
| 7 | Intestinal Diseases, Parasitic |
| 7 | Influenza in Birds |
| 7 | Inflammatory Bowel Diseases |
| 7 | Hyperthyroidism |
| 7 | Hypertension |
| 7 | Glucose |
| 7 | Giardia lamblia |
| 7 | Genome, Bacterial |
| 7 | Gene Expression |
| 7 | Gastrointestinal Microbiome |
| 7 | Gastroenteritis |
| 7 | Friends |
| 7 | Follow-Up Studies |
| 7 | Egypt |
| 7 | Diet, Vegan |
| 7 | Diagnosis, Differential |
| 7 | Cues |
| 7 | Cell Line, Tumor |
| 7 | Cell Differentiation |
| 7 | Camelus |
| 7 | Arthrodermataceae |
| 7 | Argentina |
| 7 | Antibodies |
| 7 | Antibodies, Bacterial |
| 7 | Animal Husbandry |
| 6 | Wolves |
| 6 | Visual Cortex |
| 6 | Viral Tropism |
| 6 | Ursidae |
| 6 | Tumor Microenvironment |
| 6 | Triple Negative Breast Neoplasms |
| 6 | Triatoma |
| 6 | Travel |
| 6 | Time Factors |
| 6 | Tick Infestations |
| 6 | Tandem Mass Spectrometry |
| 6 | Serum Amyloid A Protein |
| 6 | Schools |
| 6 | Rodent Diseases |
| 6 | Risk Assessment |
| 6 | Rickettsia felis |
| 6 | Rickettsia Infections |
| 6 | Retina |
| 6 | Quarantine |
| 6 | Portugal |
| 6 | Population Surveillance |
| 6 | Physical Examination |
| 6 | Peritonitis |
| 6 | Peptides |
| 6 | Pain Management |
| 6 | Organoids |
| 6 | Odds Ratio |
| 6 | Nucleic Acid Amplification Techniques |
| 6 | Neurons |
| 6 | Movement |
| 6 | Molecular Epidemiology |
| 6 | Molecular Dynamics Simulation |
| 6 | Models, Biological |
| 6 | Mites |
| 6 | Mice, Inbred C57BL |
| 6 | Lynx |
| 6 | Loneliness |
| 6 | Leishmania |
| 6 | Ixodidae |
| 6 | Israel |
| 6 | Influenza A Virus, H5N1 Subtype |
| 6 | Housing |
| 6 | Host-Parasite Interactions |
| 6 | Genome |
| 6 | Genome-Wide Association Study |
| 6 | Genetic Vectors |
| 6 | Genetic Therapy |
| 6 | Feline Acquired Immunodeficiency Syndrome |
| 6 | Extracellular Vesicles |
| 6 | Ethiopia |
| 6 | Epitopes |
| 6 | Epidemics |
| 6 | Environmental Monitoring |
| 6 | Endocarditis, Bacterial |
| 6 | Emergency Service, Hospital |
| 6 | Doxycycline |
| 6 | Double-Blind Method |
| 6 | Conservation of Natural Resources |
| 6 | Computational Biology |
| 6 | Communicable Disease Control |
| 6 | Cells, Cultured |
| 6 | Carnivora |
| 6 | CRISPR-Cas Systems |
| 6 | COVID-19 Testing |
| 6 | Biopsy |
| 6 | Biomedical Research |
| 6 | Biomarkers, Tumor |
| 6 | Base Sequence |
| 6 | Bacterial Zoonoses |
| 6 | Bacterial Infections |
| 6 | Antigens, Dermatophagoides |
| 6 | Analgesics |
| 6 | Analgesia |
| 6 | Alleles |
| 6 | Albendazole |
| 6 | Aggression |
| 5 | Zebrafish |
| 5 | World Health Organization |
| 5 | Walking |
| 5 | Viverridae |
| 5 | Visual Pathways |
| 5 | Virus Diseases |
| 5 | Vaccines |
| 5 | Urinalysis |
| 5 | Urethral Obstruction |
| 5 | Universities |
| 5 | Toxoplasmosis, Congenital |
| 5 | Thrombocytopenia |
| 5 | Thelazioidea |
| 5 | Texas |
| 5 | Telemedicine |
| 5 | Switzerland |
| 5 | Sweden |
| 5 | Surgical Wound Infection |
| 5 | Spinal Cord |
| 5 | Spatio-Temporal Analysis |
| 5 | Socioeconomic Factors |
| 5 | Serogroup |
| 5 | Sequence Analysis, RNA |
| 5 | Schizophrenia |
| 5 | Retroviridae |
| 5 | Respiratory Tract Infections |
| 5 | Referral and Consultation |
| 5 | Rats, Sprague-Dawley |
| 5 | Randomized Controlled Trials as Topic |
| 5 | Radiography |
| 5 | RNA, Ribosomal, 18S |
| 5 | Proteins |
| 5 | Predatory Behavior |
| 5 | Precision Medicine |
| 5 | Postoperative Complications |
