Geographic and individual-level drivers of antibiotic knowledge gaps, misconceptions, and misuse: a multilevel analysis of peri-urban and rural communities in Southern Nigeria

Antibiotics are powerful medicines that have saved countless lives by killing bacteria that cause infections. However, these drugs are not magic bullets that cure every illness. They do not work against viruses, which cause common ailments like the cold or the flu, nor do they treat conditions like watery diarrhea caused by non-bacterial factors. When people take antibiotics when they are not needed, or when they stop taking them before the course is finished, the bacteria they are fighting can learn to survive the drugs. This process, known as antimicrobial resistance, means that medicines that once worked stop working, leaving people with infections that are much harder, or sometimes impossible, to treat. While health officials have long known that this is a global problem, much of the data used to fight it comes from broad national averages. These big numbers often hide the specific details of how different communities think and behave, making it difficult to know exactly where to focus efforts to stop the spread of resistance.

A team of researchers set out to look deeper into this issue within Cross River State in southern Nigeria. Instead of just asking people if they had heard of antibiotics, they conducted a large survey across eleven different local areas, ranging from rural villages to the edges of the city. They interviewed over a thousand residents to understand not just what they knew, but what they believed and how they actually acted when they were sick. The goal was to see if the way people used these medicines was the same everywhere, or if specific neighborhoods had unique patterns of behavior that needed different solutions. The researchers found that while most people had heard of antibiotics and even knew the term for drug resistance, a vast number held onto dangerous false beliefs. Nearly two-thirds of the people surveyed believed that antibiotics could cure a common cold, and more than three-quarters thought they could cure watery diarrhea. These misconceptions were not just harmless misunderstandings; they were directly linked to how people behaved when they were ill.

The study revealed a surprising disconnect between knowing facts and holding beliefs. The researchers discovered that simply having a high score of factual knowledge about antibiotics did not stop people from stopping their medication early. Instead, it was the specific false belief that a medicine would cure a viral illness that drove people to quit their treatment as soon as they felt better. If a person believed the drug was working to cure their cold, they saw no reason to finish the full course of pills once their symptoms faded. This behavior, known as non-adherence, was the most common misuse pattern found, with nearly two-thirds of those who had taken antibiotics admitting to stopping early. On the other hand, factual knowledge did play a crucial role in a different area: people who knew more about the specific names and types of antibiotics were less likely to buy medicines from non-professional sources, such as market stalls or friends, rather than from a doctor or pharmacist.

Perhaps the most significant finding was that where a person lived mattered just as much as who they were. Even after accounting for factors like education, income, age, and gender, the researchers found that the local area explained a meaningful portion of why people made certain choices. Some areas had residents who were much better at using antibiotics correctly than others, regardless of their personal background. One specific area, Abi, stood out as a model of good practice, where residents had high knowledge and low rates of self-medication. In contrast, another area, Akamkpa, presented a confusing picture: its residents were well aware of drug resistance, yet they were the most likely to stop their treatments early. This suggests that in Akamkpa, the problem was not a lack of information, but likely something else entirely, such as the cost of finishing a full course of medicine or the difficulty of accessing a pharmacy.

The researchers concluded that fighting antibiotic resistance requires more than just general awareness campaigns. Because the problem is driven by specific false beliefs and local conditions, the solution must be equally specific. Education efforts need to target the exact misconception that antibiotics cure colds and diarrhea, rather than just telling people that resistance is a problem. Furthermore, health officials cannot treat every community the same way. By identifying which specific neighborhoods are struggling and why, resources can be directed where they are needed most. The study showed that understanding the geography of health behavior is essential, proving that to solve a national problem, one must look closely at the unique realities of each local community.