Treatment for viral diseases is leading to drug-resistant infections
Antibiotic resistance is leading to untreatable infections. Any age group can be affected by it. If care and caution is not exercised in the use of antibiotics, humans could be in serious trouble. We already are, if numbers are to be believed. Self-medication and use of antibiotics without thinking twice is a problem. The fact that Pakistan has, as reported by the Pakistan Medical Association, more than 600,000 quacks who pose as doctors and prescribe antibiotics without any need or deliberation, exacerbates the issue.
It is very common practice to go to "pharmacies" which are usually counters in grocery stores, run by people who are not pharmacists, and ask for any random antibiotic that the patient feels "suits" him or her. While it may have been effective the last time you used it, and the time before that, this time it may not work as you have developed resistance to it.
"We see a lot of antibiotic misuse at the hands of general practitioners as well as quacks. The urgency to use antibiotic sometimes also arises from patients demanding that they return with some medication if they have visited a doctor," says Dr. Nosheen Nasir, Senior Instructor, Adult Infectious Diseases at the Aga Khan University (AKU).
"We see antibiotics being used for viral upper respiratory tract infections and for presumed enteric fever based on typhidot results which are erroneous and misleading." Dr Nasir adds that antibiotic overuse can lead to increase in drug-resistant infections and significantly increase the risk of morbidity mortality. "Infections which were previously simple to treat now require use of more toxic and expensive antibiotics which are usually given intravenously, leading to unnecessary prolonged hospitalisations."
World Antibiotic Awareness Week (WAAW), held from November 12 to 18 this year, aims at increasing global awareness of antibiotic resistance, AMR (Antimicrobial resistance) and to encourage best practices. AMR occurs when microbes, such as bacteria, become resistant to the drugs used to treat them. The 2018 WAAW campaign has two key messages: "Think twice. Seek Advice" and "Misuse of Antibiotics puts us all at Risk".
AMR, as Dr. Nasir adds, refers to resistance among all kinds of micro organisms such as bacteria, fungi, parasites etc. when they are exposed to antimicrobials including antibiotics and antifungals.
She shares an example of antimicrobial resistance that we are facing today in Pakistan. "People get a lot of antibiotics unnecessarily for presumed typhoid fever, also called enteric fever. This has led to a country-wide outbreak of extended drug resistant (XDR) typhoid fever, sensitive to only two antibiotics, one of which can only be given intravenously. This has led to serious life threatening infections particularly in children," she says.
November 2018 also saw "Call to Action on Antimicrobial Resistance" from November 19 to 20, co-hosted as a second global event by the UN Foundation to help drive action to stop the rise and spread of superbugs. Dr. Fatima Mir, Assistant Professor of Pediatric Infectious Disease at the AKU, explains that "Super bugs are germs which over time have become resistant to common antibiotics through new mechanisms." She cites some of the lethal super bugs in Pakistan as under:
1.Multidrug resistant gram negative organisms like klebsiella pneumoniae, e.coli and serratia, leading to newborn sepsis.
2.Extended spectrum beta lactamase inhibiting (ESBL) gram negatives like e.coli, klebsiella, enterobactor sp, which can cause gut, abdominal and urine infections in all ages
3.Penicillin resistant streptococcus pneumonia, causing lower respiratory tract infections in all ages
4.Multidrug resistant Typhoid, effecting all ages
5.Multidrug resistant Tuberculosis (TB), affecting all ages
In Dr Mir’s professional experience, Pakistanis generally have a tendency to hurry towards antibiotics, "Especially in cases of Upper Respiratory tract illnesses which are usually viral but also associated with symptoms which make one miserable, like congested nose, throat and body aches, parents feel kids won’t get better without antibiotics, and most physicians succumb to pressure and prescribe antibiotics even for clearly viral illnesses." She adds that one reason for over prescription is lack of low-cost testing to establish a viral cause. "Usually a full course of antibiotics is cheaper than a test for a single viral antigen, so physicians make a misplaced choice of empiric antibiotics to appease parents (of child patients) in place of expensive testing for an essentially self-resolving viral illness," she says.
The problem of resistance to drugs affects all age groups. The elderly are not spared either. Only tests conducted in the laboratory can confirm whether the cause is viral or bacterial. Lack of mobility of elders to go or be taken to laboratories, plus general caretaker fatigue that sets in when an elderly patient has been dependent for long, means a lot of elderly people end up getting even fewer lab tests run on them than patients of other ages.
The easiest way out is to start them on antibiotics without getting even a simple test done like the "culture" which tells which antibiotics would still be effective for that particular patient. "As older patients may not manifest with typical symptoms of infection, antibiotics are frequently given often causing antibiotic resistance. They often may not have fever, and the infection may only manifest as weakness. This practice can be curbed if investigations are done early to confirm infection prior to starting antibiotic," says Dr Saniya Sabzwari, Geriatric Specialist at the AKU.
In 2017, a "National Action Plan" was drafted by the Health Ministry in Pakistan to fight antimicrobial resistance, developed in the light of the five strategic objectives listed by the World Health Organisation’s (WHO) Global Action Plan for AMR.
Between the years 2000 and 2010, global consumption of antibiotics has increased by 30 per cent. Some 700,000 people die every year from infections that don’t respond to antibiotics. If this is not controlled, AMR could cause 10 million deaths each year by 2050; this number would be more than the deaths caused by cancer.
While over-dosage leads to antibiotic resistance and other serious side effects, under-dosing is a problem too. "This means that the drug, even if chosen correctly, is ineffective because it cannot reach effective concentration in blood. Incorrect dosage is one of the main contributors to antibiotic resistance in addition to incorrect usage," says Dr. Mir.