Reported Reactions

Adverse event reports that FDA received

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Respiratory tract infection adverse event reports that record this term

Kind of term
MedDRA preferred term
Plain meaning
a respiratory infection

What a report is

A report is not proof that the drug was the cause of the event.

FDA says:

Adverse event reports submitted to FDA do not undergo extensive validation or verification. Therefore, a causal relationship cannot be established between product and reactions listed in a report. While a suspected relationship may exist, it is not medically validated and should not be the sole source of information for clinical decision making or other assumptions about the safety or efficacy of a product. Additionally, it is important to remember that adverse event reports represent a small percentage of total usage numbers of a product. Common products may have a higher number of adverse events due to the higher total number of people using the product.

Source: openFDA, Drug Adverse Event Overview, section "Responsible use of the data". The site read the page on . The data have the reports that FDA received through .

FDA also says:

There is no certainty that the reported event (adverse event or medication error) was actually due to the product. FDA does not require that a causal relationship between a product and event be proven, and reports do not always contain enough detail to properly evaluate an event. The information in these reports has not been scientifically or otherwise verified as to a cause and effect relationship and cannot be used to estimate the incidence of these events.

Source: openFDA, Drug Adverse Event Overview. The site read the page on .

Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated.

Source: openFDA, Response of the drug event API (meta.disclaimer). The site read the page on .

Not medical advice. This site counts what was reported to FDA. Questions about a medicine or device belong with a pharmacist or clinician.

Reports on file

From January 2004 to June 2026, FDA received 25,575 adverse event reports that record the MedDRA preferred term Respiratory tract infection. In plain words, the term means: a respiratory infection. The person who codes a report selects the term that agrees best with the description of the reporter.

FDA received 1,846 reports in the 12 months to June 2026 and 1,978 in the 12 months before. FDA releases FAERS data every quarter, so the newest months are not complete. They grow in later releases.

By reports in the 12 months to June 2026, this term was number 385 of 1,436 reaction terms with a page. Of the 1,332,454 drug reports that FDA received in the 12 months to June 2026, 1,846 (0.1%) record this term. Reports for female patients were 58.1% of the reports that record this term and 52.7% of all drug reports.

The number of people who use the product is not in the data. A count is not a rate.

MedDRA

The Medical Dictionary for Regulatory Activities. The person who codes a report selects the preferred term that agrees best with the description of the reporter. FDA does not publish the description.

Plain meaning

A respiratory infection. The words are from the fixed dictionary of this site. They add nothing to a report.

Data version

openFDA FAERS release of 29 Oct 2026. Reports received through 30 Jun 2026.

Drugs in these reports

The table has the 127 drug pages with 100 or more reports that record this term. The rows are in order of name. A drug page with fewer reports for this term is not in the table. The counts are the counts that the site keeps for each reaction term, and a count can be lower than the count of FDA.

FDA says:

Additionally, it is important to remember that adverse event reports represent a small percentage of total usage numbers of a product. Common products may have a higher number of adverse events due to the higher total number of people using the product.

Source: openFDA, Drug Adverse Event Overview. The site read the page on .

Importantly, the AEMS data by themselves are not an indicator of the safety profile of the drug or biologic.

Source: FDA, FDA Adverse Event Monitoring System (AEMS) Public Dashboard. Content current as of . The site read the page on .

Drugs that the reports with the term Respiratory tract infection name as a suspect product, in order of name
DrugClassReports with this term
AbataceptSelective T cell costimulation modulator116
Acetaminophen254
Acetaminophen Tramadol117
ActemraInterleukin-6 receptor antagonist177
AdalimumabTumor necrosis factor blocker160
Advair HfaCorticosteroid507
Albuterolbeta2-Adrenergic agonist278
Albuterol sulfatebeta2-Adrenergic agonist312
Alendronate sodiumBisphosphonate178
AmbrisentanEndothelin receptor antagonist106
AminophyllineMethylxanthine131
AmlodipineCalcium channel blocker203
Amlodipine besylateDihydropyridine calcium channel blocker302
AspirinNonsteroidal anti-inflammatory drug501
AzathioprinePurine antimetabolite130
Beclomethasone345
Bisoprololbeta-Adrenergic blocker205
BortezomibProteasome inhibitor135
BudesonideCorticosteroid122
Budesonide Formoterol Fumarate122
Calcium321
Calcium carbonateBlood coagulation factor280
Carbidopa levodopaAromatic amino acid202
CarboplatinPlatinum-based drug244
CarfilzomibProteasome inhibitor122
Certolizumab pegolTumor necrosis factor blocker151
CimziaTumor necrosis factor blocker199
CiprofloxacinFluoroquinolone antibacterial339
Ciprofloxacin hydrochlorideFluoroquinolone antibacterial138
CisplatinPlatinum-based drug112
ClonazepamBenzodiazepine454
ClozarilAtypical antipsychotic158
CosentyxInterleukin-17A antagonist513
CyclophosphamideAlkylating drug499
CyclosporineCalcineurin inhibitor immunosuppressant152
CytarabineNucleoside metabolic inhibitor108
DaratumumabCD38-directed cytolytic antibody151
DarzalexCD38-directed cytolytic antibody107
DexamethasoneCorticosteroid737
DiazepamBenzodiazepine112
DoxorubicinAnthracycline topoisomerase inhibitor170
Duodopa156
DupixentInterleukin-4 receptor alpha antagonist701
EnbrelTumor necrosis factor blocker1,286
ErgocalciferolProvitamin D2 compound447
EtoposideTopoisomerase inhibitor168
FluticasoneCorticosteroid135
Fluticasone furoateCorticosteroid108
Fluticasone propionateCorticosteroid103
Fluticasone Propionate Salmeterol Xinafoate125
Folate Sodium360
Folic acid307
FosamaxBisphosphonate110
FurosemideLoop diuretic189
GilenyaSphingosine 1-phosphate receptor modulator137
HizentraHuman immunoglobulin G211
Human immunoglobulin gHuman immunoglobulin G490
Human Immunoglobulin G Hyaluronidase Recombinant Human135
Humira1,236
Hydromorphone103
Hydromorphone hydrochlorideOpioid agonist215
ImbruvicaKinase inhibitor122
InfliximabTumor necrosis factor blocker183
IxazomibProteasome inhibitor101
LeflunomideAntirheumatic agent138
LenalidomideThalidomide analog257
LetairisEndothelin receptor antagonist113
MeloxicamNonsteroidal anti-inflammatory drug118
MepolizumabInterleukin-5 antagonist347
MethotrexateFolate analog metabolic inhibitor800
Methotrexate sodiumFolate analog metabolic inhibitor168
MethylprednisoloneCorticosteroid189
MontelukastLeukotriene receptor antagonist177
Montelukast sodiumLeukotriene receptor antagonist137
MoxifloxacinFluoroquinolone antibacterial209
Moxifloxacin hydrochlorideFluoroquinolone antibacterial252
Mycophenolate mofetilAntimetabolite immunosuppressant334
NucalaInterleukin-5 antagonist192
OcrevusCD20-directed cytolytic antibody235
OfevKinase inhibitor147
OmalizumabAnti-IgE696
OmeprazoleProton pump inhibitor125
OpsumitEndothelin receptor antagonist150
OrenciaSelective T cell costimulation modulator266
OtezlaPhosphodiesterase 4 inhibitor240
PaclitaxelMicrotubule inhibitor133
PantoprazoleProton pump inhibitor145
PomalidomideThalidomide analog150
PomalystThalidomide analog164
PrednisoloneCorticosteroid320
PrednisoneCorticosteroid1,206
ProliaRANK ligand inhibitor148
Pulmicort Turbuhaler132
RamiprilAngiotensin converting enzyme inhibitor128
RemicadeTumor necrosis factor blocker261
RevlimidThalidomide analog633
RinvoqJanus kinase inhibitor218
Risedronate sodiumBisphosphonate363
RituximabCD20-directed cytolytic antibody1,234
Ropivacaine hydrochlorideAmide local anesthetic202
RosuvastatinHMG-CoA reductase inhibitor225
Rosuvastatin calciumHMG-CoA reductase inhibitor331
SimponiTumor necrosis factor blocker312
SingulairLeukotriene receptor antagonist546
SkyriziInterleukin-23 antagonist105
SolirisComplement inhibitor117
SpinrazaAntisense oligonucleotide115
SpironolactoneAldosterone antagonist119
StelaraInterleukin-12 antagonist286
SulfasalazineAminosalicylate107
SymbicortCorticosteroid236
SynagisRespiratory syncytial virus Anti-F protein monoclonal antibody252
TacrolimusCalcineurin inhibitor immunosuppressant299
TheophyllineMethylxanthine382
Tiotropium112
Tiotropium bromideAnticholinergic291
Tiotropium bromide monohydrate100
TocilizumabInterleukin-6 receptor antagonist112
TracleerEndothelin receptor antagonist110
Tramadol hydrochlorideOpioid agonist341
TysabriIntegrin receptor antagonist292
VelcadeProteasome inhibitor171
VenetoclaxBCL-2 inhibitor146
Vincristine181
Vitamin dProvitamin D2 compound168
XeljanzJanus kinase inhibitor434
XolairAnti-IgE522

The page of each drug has the count of each reaction term in its reaction lookup.

Drug classes in these reports

The table has the 46 pharmacologic classes with 250 or more reports that record this term. The rows are in order of name.

FDA says:

Additionally, it is important to remember that adverse event reports represent a small percentage of total usage numbers of a product. Common products may have a higher number of adverse events due to the higher total number of people using the product.

Source: openFDA, Drug Adverse Event Overview. The site read the page on .

Importantly, the AEMS data by themselves are not an indicator of the safety profile of the drug or biologic.

Source: FDA, FDA Adverse Event Monitoring System (AEMS) Public Dashboard. Content current as of . The site read the page on .

Pharmacologic classes of the drugs that the reports with the term Respiratory tract infection name, in order of name
ClassReports with this term
Alkylating drug692
Anti-IgE1,222
Anticholinergic452
Antimetabolite immunosuppressant385
Atypical antipsychotic369
Benzodiazepine612
beta-Adrenergic blocker317
beta2-Adrenergic agonist697
Bisphosphonate739
Blood coagulation factor353
Calcineurin inhibitor immunosuppressant492
CD20-directed cytolytic antibody1,768
CD38-directed cytolytic antibody323
Corticosteroid4,247
Dihydropyridine calcium channel blocker304
Endothelin receptor antagonist527
Fluoroquinolone antibacterial1,036
Folate analog metabolic inhibitor1,027
HMG-CoA reductase inhibitor735
Human immunoglobulin G859
Integrin receptor antagonist419
Interleukin-12 antagonist310
Interleukin-17A antagonist619
Interleukin-4 receptor alpha antagonist735
Interleukin-5 antagonist539
Interleukin-6 receptor antagonist348
Janus kinase inhibitor817
Kinase inhibitor942
Leukotriene receptor antagonist860
Loop diuretic257
Methylxanthine513
Microtubule inhibitor250
Nonsteroidal anti-inflammatory drug881
Nucleoside metabolic inhibitor477
Opioid agonist721
Phosphodiesterase 4 inhibitor285
Platinum-based drug421
Programmed death Receptor-1 blocking antibody251
Prostacycline vasodilator282
Proteasome inhibitor616
Proton pump inhibitor594
Provitamin D2 compound615
Respiratory syncytial virus Anti-F protein monoclonal antibody255
Selective T cell costimulation modulator382
Thalidomide analog1,204
Tumor necrosis factor blocker2,797

A class with many reports in all has many reports for almost every term.

Reports by month

Reports that record Respiratory tract infection, by month, five years to June 2026
025050020222023202420252026

FDA releases FAERS data every quarter, so the newest months are not complete. They grow in later releases.

Patients in these reports

Age of the patient in the reports that record Respiratory tract infection
AgeReportsShareShare as a bar
Under 23831.5%
2 to 116922.7%
12 to 173291.3%
18 to 442,98211.7%
45 to 646,27824.5%
65 to 743,92115.3%
75 and over2,67510.5%
Age not given8,31532.5%
Sex of the patient in the reports that record Respiratory tract infection
SexReportsShareShare as a bar
Female14,86758.1%
Male8,02631.4%
Unknown or not given2,68210.5%

Age and sex are as the report gives them. 46.4% of these reports give the United States as the country.

Terms near this one

Official pages

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Reported Reactions. Respiratory tract infection: adverse event reports that record this term. https://reportedreactions.com/reaction/respiratory-tract-infection/ Source: U.S. Food and Drug Administration, openFDA Drug Adverse Event (FAERS) files, release of . Reports received through .

Where the data come from

The counts come from the openFDA Drug Adverse Event (FAERS) bulk files, release of 29 Oct 2026. The files have the reports that FDA received through 30 Jun 2026. A drug name is the name on the report. The site matches it to a brand name or a generic name of the National Drug Code Directory of 2 Nov 2026. A class is the pharmacologic class (EPC) of the FDA label.

The count has the reports with each spelling of one MedDRA preferred term. The site does not publish a report narrative, a lot number, a detail of a patient or the identity of a reporter. The record of FDA is the authority. See how the site counts reports, the data sources and the corrections page.

Questions

What does Respiratory tract infection mean in an adverse event report?

In plain words: a respiratory infection. It is a MedDRA preferred term. FDA codes the description of a reporter with the MedDRA dictionary. The openFDA files do not have the description itself, and this site does not show it.

Does a drug in the table mean that the drug was responsible for this reaction?

No. FDA says:

No individual drug is connected to any individual reaction.

Source: openFDA, Drug Adverse Event Overview. The site read the page on .

When a report lists multiple drugs and multiple reactions, there is no way to conclude from the data therein that a given drug is responsible for a given reaction.

Source: openFDA, Drug Adverse Event Overview. The site read the page on .

What does this page tell a person who has this symptom?

This page gives counts of reports. It cannot assess a person. A pharmacist or a clinician can assess a person.

If this is a medical emergency, please call 911.

Source: FDA, MedWatch Online Voluntary Reporting Form. The site read the page on .