Bugs and Drugs: The Infectious Disease Pharmacist

Many of us may interact with a pharmacist regularly, but do most of us realize what the profession truly entails? Pharmacists are not just found in your local drug store, they also play integral roles in hospitals, long-term care, research institutions, as well as in healthcare industry. In today’s post, we will explore just one of those many specialties, Infectious Disease Pharmacists, who we celebrate nation-wide on May 22.

There are over 330,000 pharmacists in the United States, with 60% working in community/retail pharmacies. Another 35% work in hospitals and healthcare facilities, with the remainder employed by laboratories, academia, and the pharmaceutical industry. About 75% of American hospitals assign pharmacists to patient care teams, including in their ambulatory/outpatient facilities. The >2,300 Infectious Disease Pharmacists work mostly in hospitals or with healthcare systems.

How does someone become an infectious disease pharmacist? The first step is completing the Doctor of Pharmacy degree, starting with undergraduate prerequisites, followed by 3-4 years in a PharmD program. After completing the licensure exams, PharmD graduates are ready to work. However, some will continue into one or two post-graduate residencies (if they get a spot – only 15-20% of candidates are accepted) where they can enhance their skills, specialize, or work towards certifications. Those who want to go into research can apply for a fellowship.

What do infectious disease pharmacists do? Infectious disease pharmacists play a critical role in helping hospitals use antibiotics safely and effectively. These specialists are responsible for:

• Tracking antibiotic use throughout the facility to ensure these medications are being used appropriately and responsibly, an effort known as antimicrobial stewardship (overuse of antibiotics contributes to multi-drug resistant organisms which can cause life-threatening infections that don’t respond to any known antibiotic),
• Consult with physicians from across units about unusual, severe, or difficult-to-treat infections, helping determine the most effective therapy for each patient,
• Reviewing laboratory cultures and susceptibility data to guide treatment decisions, including when to de-escalate from broad-spectrum antibiotics to a more targeted therapy known to work against a specific organism, or when escalation to broader coverage is necessary,
• Optimizing dosing to improve efficacy while reducing toxicity and other safety concerns, tailoring therapy plans to individual patients and pathogens,
• Beyond direct patient care, working closely with Infection Prevention teams to identify trends in resistance and infection patterns within the facility,
• Developing institutional guidance documents and antibiotic use protocols that support safer, more consistent care across the organization.

Although pharmacists are among the most accessible healthcare professionals, their contributions often go unrecognized. Nearly 90% of Americans live within five miles of a pharmacy, making pharmacists the healthcare providers many people encounter most frequently and can access most easily. While community pharmacists are often the public face of the profession, specialized pharmacists work behind the scenes in hospitals and health systems, providing expertise that directly impacts patient outcomes. Infectious disease pharmacists are a prime example. Through antimicrobial stewardship, optimization of therapy, collaboration with physicians and microbiology laboratories, infection prevention efforts, and the development of treatment guidelines, they help ensure patients receive the safest and most effective care possible. Their work protects individual patients, strengthens healthcare systems, and helps preserve the effectiveness of antibiotics for future generations. As we recognize Infectious Diseases Pharmacists Day this Friday, it is worth celebrating these highly trained but often little-known healthcare professionals whose expertise plays a vital role in modern medicine.