👉 Infections pose significant limitations to human health and societal functioning due to several key factors. Firstly, infections can be caused by a wide variety of pathogens, including bacteria, viruses, fungi, and parasites, each with distinct mechanisms of entry and replication, making them challenging to treat effectively. Secondly, the human immune system, while generally robust, can sometimes fail to mount an adequate response, leading to persistent or recurrent infections. Additionally, some infections can cause severe complications, such as sepsis in bacterial infections or encephalitis from viral pathogens, which can be life-threatening. Furthermore, antibiotic resistance has emerged as a major concern, rendering many infections untreatable with conventional antibiotics. Finally, the rapid mutation rates of certain viruses, like influenza and HIV, can lead to new strains that evade existing vaccines and treatments, necessitating constant updates and adaptations in medical strategies. These limitations highlight the ongoing need for research and development in infectious disease prevention and management.