Electrostatics can be helpful in figuring out the spread through air of infectious diseases

Comment Eq. (2) has been replaced with the following v_G=(g·δ·d_c^2)/(18∙η) (2) These section have been included in the appropriate locations: If HB- alone is protected through shield and mask, things do not really change for HB+ because the personal equipment the facing HB- wears is made of dielectric materials inappropriate to ensure electrostatic shielding of HB- for the benefit of HB+. even as a final result of rubbing seats and beddings with synthetic garments. Against this backdrop, the setting up of suitable static-free areas results technically feasible, on a case-by-case basis, with the support of long-established guidelines available in the technical literature (see, for example, [14]). New reference added: [18] R. Channappanavar, C. Fett, M. Mack, P. P. Ten Eyck, D. K. Meyerholz, S. Perlman, Sex-based differences in susceptibility to severe acute respiratory syndrome coronavirus infection, The J. of Immunology, 198(2017) 4046-4053.