WHO has recently published first ever list of antibiotic-resistant “priority pathogens” which is a catalogue of 12 families of bacteria that poses a grave threat to human health. India is the world’s largest consumer of antibiotics and where carelessness in antibiotic use and environmental antibiotic pollution has been documented. While the government drafted policy measures to tackle the problem, it has not been so forthcoming on the issue.
What are antibiotics?
- Antibiotics are medicines that fight or prevent infection caused by bacteria. They can’t fight viral infections such as cold and flu.
Classification of medicine and their action
- Antipyretics Reduce body temperature
- Analgesics Reduce pain
- Antimalarials Used for treatment of malaria
- Germicides Kill germs
- Antiseptics Kill germs (can be safely used on living tissue)
- Disinfectant Kill germs (cannot be used on living tissue)
- Antacids Reduce acidity in stomach
- Anaesthetics Loss of sensation
- Antibiotics Kill microorganisms
- Tranquilizers Reduce anxiety and bring calmness
What is antibiotic resistance?
- Antibiotic resistance is the ability of bacteria or other microbes to resist the effects of an antibiotic. In this mutation of bacteria takes place which reduce the effectiveness of drug which was designed to target the very same bacteria.
How bacteria is developing resistant to antibiotics?
This can be well understand with the help of diagram:
Diagram shows how genetic mutation causes drug resistance. Bacteria multiply by the millions. A few of these bacteria will mutate. Some mutations make the bacterium drug resistant. Drug resistant bacteria multiply and thrive. This can be summarized as:
Bacteria can carry genes that allow them to survive even when exposed to the antibiotics that are currently available. The gene that carries antibiotic resistance can be passed between bacteria, which result in creation of bacteria that carry resistance genes to different antibiotics. This resultant bacteria earns the title superbug.
For example NDM-1 is an enzyme gene that can be acquired by bacteria which cause diseases such as pneumonia, or infections of kidney,urinary tract. This enzyme gives bacteria resistance to drug such as carbapenem, a strong antibiotic which is considered as a last resort when other antibiotics do not work.
Why antibiotics resistance is a major concern?
In September 2016, a woman in the US died after being infected by a superbug during her visit to India, say doctors who found that the ‘nightmare’ bacteria was resistant to all available antibiotics. The infection was caused by carbapenem-resistant Enterobacteriaceae (CRE), a multidrug-resistant organism associated with high mortality.
Antibiotics are the foundation on which all modern medicine rests. Cancer chemotherapy, organ transplants, surgeries, all rely on antibiotics to prevent infections. If this infection becomes incurable then it will be a big setback for medical advances that has been made in past 50 yrs.
The World Health Organization estimates that in 2014, there were about 480,000 new cases of multi-drug resistant tuberculosis (MDR-TB), a form of tuberculosis that is resistant to the two most powerful anti-TB drugs. A growing list of infections – such as pneumonia, tuberculosis, blood poisoning and gonorrhoea – are becoming harder, and sometimes impossible, to treat as antibiotics become less effective.
WHO has also released a Priority list for development of new drugs to fight these antibiotic-resistant bacteria.
Antibiotic resistance is accelerated by the misuse and overuse of antibiotics, as well as poor infection prevention and control. Steps can be taken at all levels of society to reduce the impact and limit the spread of resistance.
- There is an urgent need to stop indiscriminate use of drug and there must be international collaboration in research to develop new variant of drug.
- Research in field of nanoparticles can play an important role in developing new variant of drug.
- Implementing recommendations of Chennai Declaration on Anti-microbial resistance, would equally benefit against growing antibiotic resistance.
Some major recommendations made in the Chennai Declaration include
- An Infection Control Team (ICT) be made mandatory in all hospitals.
- Formulation of an effective national policy to control the rising trend of antimicrobial resistance,
- Ban on the over-the-counter sale of antibiotics.
- Changes in the medical education curriculum to include training on antibiotic usage and infection control.
- Setting up of a National Task Force to guide and supervise the regional and State infection control committees.
What is Government doing ?
Recently, the government has come up with National Action Plan to combat Antimicrobial Resistance
- 11 ministries came together to develop an action plan to combat antimicrobial resistance (AMR) and signed Delhi Declaration.
- The Delhi Declaration calls for the support of all stakeholders including UN, WHO, FAO and other UN agencies, civil society organizations etc., in developing and implementing the national and state action plans on AMR.
Indian Council of Medical Research (ICMR) has set up a National Anti-Microbial Resistance Research and Surveillance Network (AMRRSN) to enable compilation of data of AMR at the national level. In addition, the health ministry enacted regulations to regulate the sale of antibiotics and brought out National Guidelines for the use of antibiotics.
What can we do to prevent Anti-microbial Resistance from increasing: