Self-Reported History of Herpes Zoster and Awareness of Zoster Vaccination Among Healthcare Workers: A Multicenter Cross-Sectional Study

Objective: Varicella zoster virus (VZV), a member of the Herpesviridae family, is known as the causative agent of chickenpox (varicella). Following primary infection, VZV can remain latent for life and may reactivate over time to cause herpes zoster (shingles). Advanced age, immunodeficiency, and certain chronic illnesses are major risk factors for the development of herpes zoster. To prevent herpes zoster, a live zoster vaccine was licensed in 2006, followed by a recombinant zoster vaccine with higher efficacy in 2018. In Türkiye, the recombinant zoster vaccine was licensed in 2024. Raising awareness among healthcare workers is important both for their own health and the safety of vulnerable patients. This study aimed to evaluate healthcare workers’ knowledge and awareness of herpes zoster infection and zoster vaccines across the country, as well as to determine the prevalence of prior herpes zoster infection among them. Methods: After obtaining ethical approval, a nationwide multicenter survey was conducted. A questionnaire was distributed to healthcare workers via an online link. Participation was entirely voluntary. The survey collected demographic information (age, sex, profession, years of experience) and included questions on knowledge of herpes zoster, history of zoster infection, symptoms and severity (if applicable), awareness of the zoster vaccine, and vaccination attitudes. Results: A total of 5180 healthcare workers participated, of whom 3505 were female. The participants ranged in age from 18 to 79 years (mean age: 34.24 ± 11.52). Regarding professions: 47.9% were physicians, 21.3% were nurses or midwives, 0.8% were dentists or dental technicians, and 30% were from other healthcare professions. Among participants, 54.4% had ≤10 years of professional experience, 20% had comorbidities, and 10.5% were using immunosuppressive medications. It was found that 9.6% had previously had herpes zoster, 8.8% had no knowledge of the disease, 39.6% were aware of the vaccine, and 20.1% were unwilling to pay for vaccination. Multivariate binary logistic regression analysis revealed that being a physician significantly increased the likelihood of having correct knowledge by 1.961 times compared to other professions (p < 0.001, CI: 1.608–2.392). Similarly, those who had heard of herpes zoster were 3.191 times more likely to answer correctly than those who had not (p = 0.011, CI: 1.650–6.172). Male gender was significantly associated with a lower likelihood of having accurate knowledge compared to females (p = 0.001, OR = 0.720, CI: 0.594–0.874). Conclusions: This study revealed that healthcare workers’ knowledge and awareness regarding herpes zoster and its vaccines are generally insufficient. The recent licensing of the vaccine in Türkiye may explain this, but it is critical for healthcare professionals to be more informed about risk groups and vaccination indications in order to enhance the effectiveness of preventive healthcare services. Given the potential for serious complications of herpes zoster in elderly and immunocompromised individuals, the importance of vaccination should be emphasized more strongly to healthcare workers. Furthermore, the finding that 20.1% of those aware of the vaccine were deterred by its cost highlights the need to improve vaccine accessibility. Economic barriers preventing healthcare workers from being vaccinated emphasize the importance of making the vaccine widely available through public support to protect both healthcare workers and patient safety.