Head lice prevalence in suburban Bangkok, Thailand, after the COVID-19 pandemic and herbal shampoo treatment

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Published: Jan 24, 2026
DOI: https://doi.org/10.63369/ijat.2026.22.1.515-528
Keywords:
Pediculosis Head lice Zingiberaceae

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Sinthusiri, J.
Community Public Health Program, Faculty of Public and Environmental Health, Huachiew Chalermprakiet University, Samut Prakan, Thailand
Sittichok, S.
Office of Administrative Interdisciplinary Program on Agricultural Technology, School of Agricultural Technology, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang, Bangkok, Thailand.
Passara, H.
Office of Administrative Interdisciplinary Program on Agricultural Technology, School of Agricultural Technology, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang, Bangkok, Thailand.
Soonwera, M.
Office of Administrative Interdisciplinary Program on Agricultural Technology, School of Agricultural Technology, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang, Bangkok, Thailand.

Abstract

The prevalence of pediculosis among 3,461 girls from 10 government kindergartens and primary schools in Ladkrabang district was 48.1% in the 1st semester (May- September 2022) and 44.6% in the 2nd semester (November 2022- March 2023), higher among primary school girls, at 51.8-55.4%, than in kindergarteners, at 30.2-33.1%. Over 80% of the infested girls came from a low-income family (<3,000 USD per year). The Zingiberaceae essential oil and shampoo treatments were highly effective with 100% cure rate for every infested girl after the 2nd treatment (on Day 10, after the 1st treatment on Day 1). Effective strategies for reducing head lice prevalence are improved living standards and head lice eradication by treatments with effective natural pediculicides and improved head lice educational program.

Article Details

How to Cite
Sinthusiri, J., Sittichok, S., Passara, H., & Soonwera, M. (2026). Head lice prevalence in suburban Bangkok, Thailand, after the COVID-19 pandemic and herbal shampoo treatment. International Journal of Agricultural Technology, 22(1), 515–528. https://doi.org/10.63369/ijat.2026.22.1.515-528
Issue
Vol. 22 No. 1 (2026): January
Section
Original Study
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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

References

Adham, D., Moradi-Asl, E., Abazari, M., Saghafipour, A. and Alizadeh, P. (2020). Forecasting head lice (Pediculidae: Pediculus humanus capitis) infestation incidence hotspots based on spatial correlation analysis in Northwest Iran. Veterinary World, 13:40-46.

Akkad, D. M., El-Gebaly, N. S., Yousof, H. A. and Ismail, M. A. (2016). Electron microscopic alterations in Pediculus humanus capitis exposed to some pediculicidal plant extracts. Korean Journal of Parasitology, 54:527-532.

Alsaady, I. M., Altwaim, S., Gattan, H. S., Alghanmi, M., Zawawi, A., Ahmedah, H., Wakid, M. H. and Azhar, E. I. (2023). Prevalence of permethrin-resistant kdr mutation in head lice (Pediculus humanus capitis) from elementary school students in Jeddah, Saudi Arabia. PeerJ, 11:e16273.

Brownell, N., Sunantaraporn, S., Phadungsaksawasdi, K., Seatamanoch, N., Kongdachalert, S., Phumee, A. and Siriyasatien, P. (2020). Presence of the knockdown resistance (kdr) mutations in the head lice (Pediculus humanus capitis) collected from primary school children of Thailand. PLOS Neglected Tropical Diseases, 14:e0008955.

Coscione, S., Kositz, C. and Marks, M. (2017). Head lice: An under-recognized tropical problem. The American Journal of Tropical Medicine and Hygiene, 97:1636-1637.

Cummings, C., Finlay, J. C. and MacDonald, N. E. (2018). Head lice infestations: A clinical update. Paediatrics & Child Health, 23:e18-e24.

Dagne, H., Biya, A. A., Tirfie, A., Yallew, W. W. and Dagnew, B. (2019). Prevalence of pediculosis capitis and associated factors among schoolchildren in Woreta town, northwest Ethiopia. BMC Res Notes, 12:465.

Dagne, H., Biya, A. A., Tirfie, A., Yallew, W. W., Andualem, Z. and Dagnew, B. (2020). Knowledge, Attitude, and Practice of Pediculus Capitis Prevention and Control and Their Predictors among Schoolchildren in Woreta Town, Northwest Ethiopia, 2018: A School-Based Cross-Sectional Study. International Journal of Pediatrics, 2020:3619494.

El-Wakeil, N. E. (2013). Botanical pesticides and their mode of action. Gesunde Pflanzen 65(4), 125-149.

Galassi, F., Adjemian, V., Gonzalez-Audino, P., Inés Picollo, M. and Toloza, A. C. (2021). Head lice were also affected by COVID-19: a decrease on pediculosis infestation during lockdown in Buenos Aires. Parasitology Research, 120:443-450.

Gunathilaka, N., Chandrasena, N. and Udayanga, L. (2019). Prevalence of ectoparasitic infections and other dermatological infections and their associated factors among school children in Gampaha district, Sri Lanka. Canadian Journal of Infectious Diseases and Medical Microbiology, 2019:5827124.

Gutiérrez, M. M., Werdin-González, J. O, Stefanazzi, N., Bras, C. and Ferrero, A. A. (2016). The potential application of plant essential oils to control Pediculus humanus capitis (Anoplura: Pediculidae). Parasitology Research, 115:633-641.

Henedi, A., Salisu, S., Asem, A. and Alsannan, B. (2019). Prevalence of head lice infestation and its associated factors among children in kindergarten and primary schools in Kuwait. International Journal of Applied and Natural Sciences, 8:71-80.

Iwamatsu, T., Miyamoto, D., Mitsuno, H., Yoshioka, Y., Fujii, T., Sakurai, T., Ishikawa, Y. and Kanzaki, R. (2016). Identification of repellent odorants to the body louse, Pediculus humanus corporis, in clove essential oil. Parasitology Research, 115:1659-1666.

Jabeen, A., Baig, M. T., Ibrahim, S., Syed, N., Sheikh, S., Syed A., Pirzada, Q. and Pirzada, N. (2024). Pediculosis Humans Capitis Prevalence as Health problem in Elementary School of Karachi Pakistan: A Commumity Based Study. Journal of Population Therapeutics and Clinical Pharmacology, 31:83-89.

Jamani, S., Rodríguez, C., Rueda, M. M., Matamoros, G., Canales, M., Bearman, G., Stevens, M. and Sanchez, A. (2019). Head lice infestations in rural Honduras: the need for an integrated approach to control neglected tropical diseases. International Journal of Dermatology, 58:548-556.

Kitvatanachai, S., Kritsiriwutthinan, K., Taylor, A. and Rhongbutsri, P. (2023). Head Lice Infestation in Pre-High School Girls, Lak Hok Suburban Area, Pathum Thani Province, in Central Thailand. Journal of Parasitology Research, 2023:8420859.

Leung, A. K. C., Lam, J. M., Leong, K. F., Barankin, B. and Hon, K. L. (2021). Paediatrics: how to manage pediculosis capitis. Drugs Context, 11:1-15.

Liao, C. W., Cheng, P. C., Chuang, T. W., Chiu, K. C., Chiang, I. C., Kuo, J. H., Tu, Y. H., Fan, Y. M., Jiang, H. T. and Fan, C. K. (2019). Prevalence of Pediculus capitis in schoolchildren in Battambang, Cambodia. Journal of Microbiology, Immunology and Infection, 52:585-591.

Meis, L and Ochsendorf, F. (2016). Head lice-epidemiology, biology, diagnosis and treatment. Deutsches Ärzteblatt International, 113:763-772.

Moshki, M., Zamani-Alavijeh, F. and Mojadam, M. (2019). Correction: efficacy of peer education for adopting preventive behaviors against head lice infestation in female elementary school students: A randomised controlled trial. PLoS One, 14:e0212625.

Mumcuoglu, K. Y., Hoffman, T. and Schwartz, E. (2022). Head louse infestations before and during the COVID-19 epidemic in Israel. Acta Tropica, 232:106503.

Nategh, A., Eslam, M. A., Davoud, A., Roghayeh, S., Akbar, G., Hassan, B. and Mehdi, S. (2018). Prevalence of head lice infestation (Pediculosis capitis) among primary school students in the Meshkin shahr of Ardabil province. American Journal of Pediatrics, 4:94-99.

Padzik, M., Olędzka, G., Gromala-Milaniuk, A., Kopeć, E. and Hendiger, E. B. (2023). The Impact of the COVID-19 Pandemic on the Prevalence of Head Lice Infestation among Children Attending Schools and Kindergartens in Poland. Journal of Clinical Medicine, 12:4819.

Rassami, W. and Soonwera, M. (2012). Epidemiology of pediculosis capitis among schoolchildren in the eastern area of Bangkok, Thailand. Asian Pacific Journal of Tropical Biomedicine, 2:901-904.

Sittichok, S. and Soonwera, M. (2018). Efficacy of new herbal shampoos from Garcinia dulcis Kurz, Citrus aurantium L. and Eucalyptus globulus Labill as pediculicides for head lice (Pediculus humanus capitis) control. International Journal of Agricultural Technology, 14:597-612.

Sittichok, S., Chantawee, A. and Soonwera, M. (2018a). Efficacy of Thai herbal shampoos from Averrhoa carambola L., Hibiscus sabdariffa L. and Passiflora edulis Sims. for controlling head lice, Pediculus humanus capitis (De Geer). International Journal of Agricultural Technology, 14:751-766.

Sittichok, S., Wongnet, O. and Soonwera, M. (2018b). New Thai herbal shampoos as pediculicides for killing head louse, Pediculus humanus capitis De Geer (Phthiraptera). Asian Pacific Journal of Tropical Biomedicine, 8:106-112.

Soleiman-Ahmad, M., Jaberhashemi, S. A., Zare, M. and Sanei-Dehkordi, A. (2017). Prevalence of head lice infestation and pediculicidal effect of permethrine shampoo in primary school girls in a low-income area in southeast of Iran. BMC Dermatol, 17:2-6.

Soonwera, M., Wongnet, O. and Sittichok, S. (2018). Ovicidal effect of essential oils from zingiberaceae plants and Eucalyptus globulus on eggs of head lice, Pediculus humanus capitis De Geer. Phytomedicine, 47:93-104.

Valero, M. A., Haidamak, J., de Oliveira Santos, T. C., Cristine Prüss, I., Bisson, A., Santosdo Rosário, C., Fantozzi, M. C., Morales-Suárez-Varela, M. and Klisiowicz, D. R. (2024). Pediculosis capitis risk factors in schoolchildren: hair thickness and hair length. Acta Tropica, 249:107075.

Woodruff, C. M. and Chang, A. Y. (2019). More than skin deep: severe iron deficiency anemia and eosinophilia associated with pediculosis capitis and corporis infestation. JAAD Case Reports, 5:444-447.

Yingklang, M., Sengthong, C., Haonon, O., Dangtakot, R., Pinlaor, P., Sota, C. and Pinlaor, S. (2018). Effect of a health education program on reduction of pediculosis in school girls at Amphoe Muang, Khon Kaen Province, Thailand. PLoS One, 13:e0198599.