Immunological reactivity of the organism in the combined effect of electromagnetic fields and noise

Journal of Occupational

IMMUNOLOGICAL

REACTIVITY FIELDS

Lalka

Todorova,

Christova

of Hygiene,

Amsterdam-PrintedinThe Netherlands

OF THE ORGANISM

ELECTROMAGNETIC

Institute

191

4 (1982)191

Accidents,

Elsevier Scientific PublishingCompany,

IN THE COMBINED

EFFECT

OF

AND NOISE

Bul.

Borislav

Dobrev,

D. Nestorov

Michel

Israel

N 15, Sofia

1431,

Bulqaria

ABSTRACT

Investigations have been carried out on the immunological reactivity of workers engaged in machine building enterprises and metallurgy of the combined effect of electromagnetic fields (EMF) and noise. Statistical significant data have been established for the suppression of some indices of natural immunity of a group of workers subjected to the combined influence of the EMFs and noise in comparison to a group of workers subjected only to noise and the control group. There is a certain decrease of the bactericidal properties of the skin, phaqocvtic number and phagocytic activity of the neutrophyles in blood. The conditions of work are characterised by intensive EMFs ranqinq from 1 to 70 kHz for the electric field (E)*- from 9.3 to 134.8'V/m, for the magnetic field (H) - from 16.3 to 423.5 A/m, while the noise level - from 84 to 104 dB(A).

03'76-6349/82/0000-0000/$02.75 0 1982 Elsevier Scientific

Publishing

Company