Reported Reactions

Adverse event reports that FDA received

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Bacterial infection adverse event reports that record this term

Kind of term
MedDRA preferred term
Plain meaning
a bacterial 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 18,276 adverse event reports that record the MedDRA preferred term Bacterial infection. In plain words, the term means: a bacterial infection. The person who codes a report selects the term that agrees best with the description of the reporter.

FDA received 1,339 reports in the 12 months to June 2026 and 1,234 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 498 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, 1,339 (0.1%) record this term. Reports for patients aged 45 to 64 were 23.1% of the reports that record this term and 20% 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 bacterial 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 118 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 Bacterial infection name as a suspect product, in order of name
DrugClassReports with this term
Acetaminophen194
ActemraInterleukin-6 receptor antagonist100
Albuterolbeta2-Adrenergic agonist206
Albuterol sulfatebeta2-Adrenergic agonist174
AllopurinolXanthine oxidase inhibitor257
Amiodarone106
Amiodarone hydrochlorideAntiarrhythmic115
AranespErythropoiesis-stimulating agent155
Asparaginase287
AvonexInterferon beta105
Betamethasone123
Bisacodyl118
BudesonideCorticosteroid131
BusulfanAlkylating drug118
CalcitriolVitamin D3 analog158
CarboplatinPlatinum-based drug125
CeftriaxoneCephalosporin antibacterial175
Ceftriaxone sodiumCephalosporin antibacterial133
Ciclosporin148
CiprofloxacinFluoroquinolone antibacterial106
CisplatinPlatinum-based drug133
CosentyxInterleukin-17A antagonist259
CyclophosphamideAlkylating drug847
CyclosporineCalcineurin inhibitor immunosuppressant449
CytarabineNucleoside metabolic inhibitor717
Dalteparin sodiumAnti-coagulant100
Daunorubicin277
Daunorubicin hydrochlorideAnthracycline topoisomerase inhibitor178
DexamethasoneCorticosteroid689
DexilantProton pump inhibitor116
Dextrose151
Dianeal Low Calcium Peritoneal Dialysis Solution with Dextrose111
Dipyrone134
Distigmine Bromide124
Dobutaminebeta-Adrenergic agonist115
DoxorubicinAnthracycline topoisomerase inhibitor175
Doxorubicin hydrochlorideAnthracycline topoisomerase inhibitor123
DulcolaxOsmotic laxative105
DupixentInterleukin-4 receptor alpha antagonist219
EnbrelTumor necrosis factor blocker548
EtoposideTopoisomerase inhibitor614
FilgrastimLeukocyte growth factor430
FludarabineNucleoside metabolic inhibitor157
Folinic Acid134
FragminAnti-coagulant116
Furazolidone138
GabapentinAnti-epileptic agent168
Heparin sodiumAnti-coagulant117
Herbals Paullinia Cupana Seed115
Human immunoglobulin gHuman immunoglobulin G144
Humira915
HydrocortisoneCorticosteroid380
Hydromorphone127
Hydromorphone hydrochlorideOpioid agonist139
ImbruvicaKinase inhibitor113
InflectraTumor necrosis factor blocker132
InfliximabTumor necrosis factor blocker150
Insulin aspartInsulin analog120
Insulin degludecInsulin analog101
Ipratropium bromideAnticholinergic207
LansoprazoleProton pump inhibitor140
Lanthanum carbonatePhosphate binder132
Leucovorin119
Mannitol102
Melatonin132
MelphalanAlkylating drug127
MercaptopurineNucleoside metabolic inhibitor355
MesnaCytoprotective agent138
MethotrexateFolate analog metabolic inhibitor804
Methotrexate sodiumFolate analog metabolic inhibitor110
MethylprednisoloneCorticosteroid451
MetronidazoleNitroimidazole antimicrobial214
MirenaProgestin116
Mycophenolate mofetilAntimetabolite immunosuppressant528
Norepinephrine bitartrateCatecholamine110
OncasparAsparagine-specific enzyme176
OndansetronSerotonin-3 receptor antagonist209
OpsumitEndothelin receptor antagonist110
Oseltamivir phosphateNeuraminidase inhibitor110
Otrivin125
PegaspargaseAsparagine-specific enzyme179
Phytonadione133
Polyethylene glycol 3350Osmotic laxative116
PomalystThalidomide analog107
Potassium chlorideOsmotic laxative144
PrednisoloneCorticosteroid410
PrednisoneCorticosteroid937
PrevacidProton pump inhibitor104
Pyridoxine hydrochloride115
RemicadeTumor necrosis factor blocker220
RevlimidThalidomide analog281
RinvoqJanus kinase inhibitor160
RituximabCD20-directed cytolytic antibody576
SimponiTumor necrosis factor blocker119
SimvastatinHMG-CoA reductase inhibitor149
SkyriziInterleukin-23 antagonist140
Sodium citrateAnti-coagulant108
Sodium ferric gluconate complexParenteral iron replacement125
Sodium phosphate monobasic115
Sodium picosulfate118
SolirisComplement inhibitor110
SymbicortCorticosteroid108
TacrolimusCalcineurin inhibitor immunosuppressant566
TocilizumabInterleukin-6 receptor antagonist169
Trelegy ElliptaAnticholinergic100
TysabriIntegrin receptor antagonist132
Umeclidinium bromide114
VancomycinGlycopeptide antibacterial106
Vasopressin121
VenclextaBCL-2 inhibitor108
Vilanterol trifenatate102
Vincristine326
Vincristine sulfateVinca alkaloid355
Vitamin cVitamin C100
Vitamin K1113
XeljanzJanus kinase inhibitor174
ZocorHMG-CoA reductase inhibitor104
Zometa126

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 32 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 Bacterial infection name, in order of name
ClassReports with this term
Alkylating drug1,291
Anthracycline topoisomerase inhibitor499
Anti-coagulant484
Anticholinergic396
Antimetabolite immunosuppressant655
Asparagine-specific enzyme355
beta2-Adrenergic agonist431
Bisphosphonate272
Calcineurin inhibitor immunosuppressant1,127
CD20-directed cytolytic antibody784
Cephalosporin antibacterial457
Corticosteroid3,939
Endothelin receptor antagonist281
Folate analog metabolic inhibitor936
HMG-CoA reductase inhibitor310
Human immunoglobulin G262
Insulin analog410
Interleukin-17A antagonist309
Interleukin-6 receptor antagonist290
Janus kinase inhibitor485
Kinase inhibitor728
Leukocyte growth factor469
Nucleoside metabolic inhibitor1,623
Osmotic laxative606
Platinum-based drug336
Proton pump inhibitor679
Serotonin-3 receptor antagonist278
Thalidomide analog501
Topoisomerase inhibitor647
Tumor necrosis factor blocker1,432
Vinca alkaloid371
Xanthine oxidase inhibitor257

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

Reports by month

Reports that record Bacterial infection, by month, five years to June 2026
010020020222023202420252026

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 Bacterial infection
AgeReportsShareShare as a bar
Under 22771.5%
2 to 116563.6%
12 to 173361.8%
18 to 442,35612.9%
45 to 644,22823.1%
65 to 742,45113.4%
75 and over1,7199.4%
Age not given6,25334.2%
Sex of the patient in the reports that record Bacterial infection
SexReportsShareShare as a bar
Female9,24150.6%
Male6,74536.9%
Unknown or not given2,29012.5%

Age and sex are as the report gives them. 52% of these reports give the United States as the country.

Terms near this one

These are the next terms in the A to Z list. The links are for navigation.

Official pages

The site checked these addresses on . The links open in a new tab.

Cite this page

Reported Reactions. Bacterial infection: adverse event reports that record this term. https://reportedreactions.com/reaction/bacterial-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 Bacterial infection mean in an adverse event report?

In plain words: a bacterial 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 .