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[Prophylactic effect of black tea extract as gargle against influenza].
Kansenshogaku Zasshi. 1997 Jun; 71(6):487-94.KZ

Abstract

We examined whether gargling with black tea prevents influenza infection. Tests were carried out during a five month period (October 1992 to March 1993). The control group that followed their normal daily routine, whereas the test group that gargled with 0.5 w/v% black tea extract twice daily (at 8 a.m. and 5 p.m.). Influenza viruses were isolated from influenza patients and an antigen analysis was carried out. As a result, two strains of influenza A viruses (H3N2) and ten strains of B virus were detected. An HI test was done using paired sera of the control group and the test group. The HI titers raised a four fold or greater in 48.8% (61/125) in the control group and 35.1% (35/134) in the test group. There was a significant difference (p < 0.05) between the control and test groups. These results indicate that black tea extract is effective as a prophylactic agent against influenza infection.

Authors+Show Affiliations

Department of Microbiology and Immunology, Showa University School of Medicine.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Controlled Clinical Trial
English Abstract
Journal Article

Language

jpn

PubMed ID

9248263

Citation

Iwata, M, et al. "[Prophylactic Effect of Black Tea Extract as Gargle Against Influenza]." Kansenshogaku Zasshi. the Journal of the Japanese Association for Infectious Diseases, vol. 71, no. 6, 1997, pp. 487-94.
Iwata M, Toda M, Nakayama M, et al. [Prophylactic effect of black tea extract as gargle against influenza]. Kansenshogaku Zasshi. 1997;71(6):487-94.
Iwata, M., Toda, M., Nakayama, M., Tsujiyama, H., Endo, W., Takahashi, O., Hara, Y., & Shimamura, T. (1997). [Prophylactic effect of black tea extract as gargle against influenza]. Kansenshogaku Zasshi. the Journal of the Japanese Association for Infectious Diseases, 71(6), 487-94.
Iwata M, et al. [Prophylactic Effect of Black Tea Extract as Gargle Against Influenza]. Kansenshogaku Zasshi. 1997;71(6):487-94. PubMed PMID: 9248263.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Prophylactic effect of black tea extract as gargle against influenza]. AU - Iwata,M, AU - Toda,M, AU - Nakayama,M, AU - Tsujiyama,H, AU - Endo,W, AU - Takahashi,O, AU - Hara,Y, AU - Shimamura,T, PY - 1997/6/1/pubmed PY - 1997/6/1/medline PY - 1997/6/1/entrez SP - 487 EP - 94 JF - Kansenshogaku zasshi. The Journal of the Japanese Association for Infectious Diseases JO - Kansenshogaku Zasshi VL - 71 IS - 6 N2 - We examined whether gargling with black tea prevents influenza infection. Tests were carried out during a five month period (October 1992 to March 1993). The control group that followed their normal daily routine, whereas the test group that gargled with 0.5 w/v% black tea extract twice daily (at 8 a.m. and 5 p.m.). Influenza viruses were isolated from influenza patients and an antigen analysis was carried out. As a result, two strains of influenza A viruses (H3N2) and ten strains of B virus were detected. An HI test was done using paired sera of the control group and the test group. The HI titers raised a four fold or greater in 48.8% (61/125) in the control group and 35.1% (35/134) in the test group. There was a significant difference (p < 0.05) between the control and test groups. These results indicate that black tea extract is effective as a prophylactic agent against influenza infection. SN - 0387-5911 UR - https://www.unboundmedicine.com/medline/citation/9248263/[Prophylactic_effect_of_black_tea_extract_as_gargle_against_influenza]_ L2 - https://medlineplus.gov/flu.html DB - PRIME DP - Unbound Medicine ER -