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Biomedical subjects

T FRANCIS

Publications and source records attributed to T FRANCIS.

At least 73 records · Page 4Linked to original sources
PubMed1953

Vaccination against influenza.

This paper reviews studies which have been carried out during the past twenty years in the United States of America to investigate the suitability of various vaccines and vaccination methods for immunizing man against the different influenza virus strains. A number of investigations in closed communities, such as children's institutions, army and navy units, and medical schools, are described. The author discusses the comparative value of the techniques employed in preparing vaccines, and the use of adjuvants in improving the response.

Child↗
PubMed1951

A comparison of the growth curves of adapted and unadapted lines of influenza virus.

A comparison of the growth curves of adapted and unadapted lines of the same strain of Type A or Type B influenza virus in mice has demonstrated that the unadapted lines of virus exhibit a lag phase of growth lasting approximately 12 hours during which little or no multiplication of virus can be demonstrated. Multiplication by the adapted line begins earlier and may be evident as soon as 6 hours after inoculation. Following the lag phase, the rates of multiplication of both lines of virus were indistinguishable when dilute inocula were used. The maximal infectious titer of the unadapted line was lower than that of the adapted line of the same strain and this disparity was increased following inoculation with large doses of virus. The shape and slope of the growth curves of influenza virus in mice were shown to be determined by the line, strain, and concentration of virus used for inoculation. The significance of these findings has been discussed.

Animals↗