Antimicrobial Resistance : A Report by WHO

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The WHO’s Global Antimicrobial Resistance Surveillance System (GLASS) report highlights a sharp increase in antibiotic resistance, particularly in low- and middle-income nations such as India, where healthcare systems are often fragile.

Drawing on data from more than 23 million bacterial infections reported in over 100 countries, the report reveals that between 2018 and 2023, over 40% of antibiotics have become ineffective against common infections of the bloodstream, urinary tract, digestive system, and reproductive organs.

In 2021 alone, bacterial infections caused an estimated 7.7 million deaths globally, with drug resistance contributing to 4.71 million of those and directly causing 1.14 million fatalities.

This article delves deeper into the topic of antimicrobial resistance and its current effects worldwide and in India.

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INTRODUCTION

Antimicrobial resistance (AMR) is emerging as one of the most serious challenges to global health, weakening the power of critical medicines and increasing the danger posed by infections that were once easily treatable, as well as by routine medical procedures.

Through its Global Antimicrobial Resistance and Use Surveillance System (GLASS), the World Health Organization (WHO) helps nations establish robust surveillance systems and produce comparable data that can drive informed public health policies.

On 13 October 2025, WHO published Global antibiotic resistance surveillance report 2025, which offers a comprehensive global picture of antibiotic resistance patterns, drawing on evidence from more than 23 million confirmed cases of bloodstream, urinary, gastrointestinal, and urogenital infections (including gonorrhoea). The findings are based on data submitted by 104 countries in 2023 and 110 countries over the 2016–2023 period. 

If you'd like to understand what AMR [Antimicrobial Resistance] is, then please look at this article. The following is a synopsis of the detailed analysis provided by WHO.


AT A GLANCE

Since the launch of GLASS in 2016, antimicrobial resistance (AMR) data have been submitted by 110 countries, including three territories and regions. Participation has expanded significantly—from just 25 countries in 2016 to 104 in 2023, reflecting a growth of more than 300%.

The steady increase in reporting underscores the growing global recognition of the importance of sharing surveillance data as a collective public health responsibility. Despite these improvements, considerable gaps in data availability and reporting continue to hinder a complete global picture.

In 2023, antibiotic resistance was detected in roughly one out of every six laboratory-confirmed bacterial infections worldwide. The highest resistance levels were found in urinary tract infections (1:3 cases) and bloodstream infections (1:6).


Lower resistance rates were observed in gastrointestinal infections (1:15) and urogenital gonorrhoeal infections (1:125).

Trends of AMR: median annual change in percentage, 2018–2023.

Geographically, the South-East Asia and Eastern Mediterranean regions reported the greatest burden, with nearly one in three infections showing resistance, followed by the African Region, where one in five infections were resistant—both surpassing the global median.

Conversely, resistance was less prevalent in the European Region (one in ten) and lowest in the Western Pacific Region (one in eleven), highlighting marked regional differences.

Median national percentage of AMR in bloodstream infections by AMR surveillance coverage, 2023.

Between 2018 and 2023, antimicrobial resistance (AMR) has risen in 40% of the pathogen–antibiotic combinations tracked for global trends, with annual relative increases ranging from 5% to 15%, depending on the specific combination.

Resistance is notably growing against “Watch” antibiotics in the AWaRe (Access, Watch, Reserve) classification—particularly carbapenems and fluoroquinolones—among major Gram-negative pathogens such as Acinetobacter spp., E. coli, K. pneumoniae, and Salmonella spp.

This trend is concerning because these drugs are critical for treating severe infections. The rise in AMR is narrowing empirical treatment options and prompting a shift from oral to intravenous therapies, with increased dependence on second-line and last-resort antibiotics.

Socioeconomic conditions and the robustness of healthcare systems play a major role in determining the burden of antimicrobial resistance (AMR), with weaker health systems experiencing higher rates of resistance.

Analysis shows a strong inverse relationship between the Universal Health Coverage (UHC) service coverage index—which measures access to essential health services—income level, and the median proportion of AMR in bloodstream infections. This pattern suggests a syndemic, where AMR disproportionately impacts countries with limited healthcare capacity and lower income.

Median national percentage of AMR in bloodstream infections (2023),by income classification and universal health coverage (UHC) service coverage index.


GLOBAL TRENDS 

Infections with AST

Here are some representations of numbers of infection episodes with AST results per million population in 2023.

Bloodstream Infections

Here are some representations of the National percentage resistance in bloodstream infections, 2023.

Gastrointestinal Infections

Here are some representations of the National percentage resistance to ciprofloxacin in gastrointestinal infections, 2023.

Urinary Tract Infections

Here are some representations of the National percentage resistance to selected antibiotics in urinary tract
infections, 2023.

Urogenital Infections

Here are some representations of the Percentage antibiotic resistance to ceftriaxone in N. gonorrhoeae urogenital infections, 2023

Percentage AMR 

Global trends in percentage AMR by infection type: median annual change (2018–2023) and 2023 percentage resistance estimates :


INDIAN STATS

The numbers below were a part of Global antibiotic resistance surveillance report 2025 :

1

Blood Stream Infections

DRUGS

NO. OF INFECTIONS WITH AST, 2023

NO. OF INFECTIONS WITH AST, 2018-2023

% RESISTANCE

Acinetobacter - Imipenem

9946

30,983

71.2

E. coli - Cefotaxime

6564

25,744

78.5

E. coli - Imipenem

8962

30,295

32.3

E. coli - IIIrd Gen Cephalosporins

6564

17,527

79.4

K. pneumoniae - Cefotaxime

6132

24,864

79.6

K. pneumoniae - Imipenem

9065

32,301

61.2

Salmonella - Ciprofloxacin

-

-

-

S. aureus - Methicillin

8373

37,592

50.9

S. pneumoniae - Penicillin G

-

-

-

2

Gastrointestinal Infections

DRUGS

NO. OF INFECTIONS WITH AST, 2023

NO. OF INFECTIONS WITH AST, 2018-2023

% RESISTANCE

Salmonella - Ciprofloxacin

340

1084

28.9

Shigella - Ciprofloxacin

186

186

82.1

3

Urinary Tract Infections

DRUGS

NO. OF INFECTIONS WITH AST, 2023

NO. OF INFECTIONS WITH AST, 2018-2023

% RESISTANCE

E. coli - Cefotaxime

51,874

174,593

73.5

E. coli - Imipenem

64,488

206,402

19.2

K. pneumoniae - Cefotaxime

13,440

44,535

69.9

K. pneumoniae - Imipenem

18,739

59,460

40.3

4

Urogenital Infections

DRUGS

NO. OF INFECTIONS WITH AST, 2023

NO. OF INFECTIONS WITH AST, 2018-2023

% RESISTANCE

N. gonorrhoea - Ceftriaxone

-

-

-


AMRSN, 2013

Antimicrobial resistance (AMR) represents a significant public health challenge in India, a country with a high prevalence of infectious diseases and extensive, often unregulated, antibiotic use. Accurate assessment of the AMR burden is essential to understand its consequences, while knowledge of local resistance trends is critical for developing both empirical and pathogen-specific treatment strategies suited to varied epidemiological contexts.

In view of this, to generate relevant evidence on the extent of drug resistance and a nationally representative reliable data on AMR which was not existent from India, ICMR initiated Antimicrobial Resistance Surveillance and Research Network (AMRSN) in 2013.

Goals :

  1. Establish network of hospitals to monitor trends in the antimicrobial susceptibility profile of clinically important bacteria and fungi limited to human health.
  2. Include comprehensive molecular studies for identifying the clonality of drug-resistant pathogens and their transmission dynamics to enable better understanding of AMR in the Indian context and develop suitable interventions.
  3. Disseminate information on AMR in pathogenic organisms to stakeholders to promote interventions that reduce AMR.
  4. Create data management system for data collection and analysis.

Focus : 

  •  Enterobacteriaceae causing sepsis,
  • Gram negative non-fermenters,
  • Enteric fever pathogens,
  • Diarrheagenic bacterial organisms,
  • Gram positives: staphylococci and enterococci and
  • Fungal pathogens (excluded in WHO priority pathogens)-yeasts (Candida and Cryptococcus spp.) and mycelial fungi (Aspergillus spp. and Zygomycetes spp.)

Collaboration with Institutes :

  • Diarrheagenic bacterial organisms, CMC, Vellore
  • Enteric fever pathogens: AIIMS, New Delhi
  • Enterobacteriaceae causing sepsis: PGIMER, Chandigarh
  • Gram negative non fermenters: CMC, Vellore
  • Gram positives including MRSA: JIPMER, Pondicherry
  • Fungal infections: PGIMER, Chandigarh
Indian map with centres

REFERENCES

India's Antimicrobial Resistance Surveillance & Research Initiative, ICMR. Link.
Global antibiotic resistance surveillance report 2025. 13 October 2025 | Global report. WHO. ISBN: 978924011633. Link.
Global antibiotic resistance surveillance report 2025: summary13 October 2025 | Executive summary. WHO Reference Number: B09585. Link.
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