CDC influenza surveillance report no. 61, December 19, 1961

"Scattered outbreaks of Influenza A2 (Asian) and Influenza B have been observed during 1961 in a number of countries throughout the world. Confirmed outbreaks of Asian influenza were reported from every continent except Antarctica. Influenza B was less ubiquitous, touching only Europe, North America and Asia with recognized outbreaks. Within the continental United States, Asian influenza made its mark early in 1961. At that time, outbreaks were reported from New York City, Stamford and New Haven, Connecticut. It was not prevalent elsewhere. No confirmed outbreaks of Asian influenza have been reported during the present season. In contrast, Influenza B is known to be etiologic in outbreaks in four States at the present time. These are Arizona, Florida, California and Colorado. Southern, Saskatchewan is also involved in an epidemic of Influenza B. Respiratory disease outbreaks are occurring with increasing frequency in the United States with the advent of the winter season. Several States are reporting outbreaks that would appear to be significantly more widespread than usual. These States are Oregon, Missouri, and Illinois. Epidemiologic, clinical, and laboratory studies are under way.Influenza vaccine production has been stepped up to meet the demands. The projected supply will be three times greater than that available last year. The recommendation of the Surgeon General to immunize the high risk groups remains most pertinent. Subcutaneous inoculation is the route of choice." - p. 3I. Summary of information -- II. Epidemic reports: (A.) Asian in\ufb02uenza; (B.) In\ufb02uenza B outbreaks-through October 1961 -- III. In\ufb02uenza vaccine: (A.) Production; (B.) Utilization; (C.) Route of inoculation -- IV. Minor antigenic change -- V. Weekly pneumonia and influenza deathsDecember 19, 1961.This report was prepared in the Surveillance Section, Communicable Disease Center by Theodore C. Eickhoff, M. D., Chief, Influenza Surveillance Unit, with the Assistance of the Statistics Section, Robert E. Serfling, Ph.D., Chief."For administrative use." - cover"Information contained in this report is a summary of data reported to CDC by State Health Departments, Epidemic Intelligence Service Officers, collaborating influenza diagnostic laboratories, and other pertinent sources. Much if it is preliminary in nature and is primarily in nature and is primarily intended for those involved in influenza control activities. It is understood that the contents of these report will not be released to the press, except by the Office of the Surgeon General, Public Health Service, U.S. Department of Health, Education and Welfare. State Health Officers, of course, will judge the advisability of releasing any information from their own state." - cove

CDC influenza surveillance report no. 59, February 10, 1961

"In the three-week interval since the publication of the last CDC Influenza Surveillance Report, No. 58 January 16, 1961, no outbreaks of influenza or unusual concentrations of cases of influenza-like disease have been reported to this unit. There has been no evidence of influenza activity in the continental United States thus far during the present season. Analysis of current deaths due to influenza and pneumonia received from 108 cities in the United States reveals that the number of deaths through the week ending February 4, 1961, are within the expected limits of normal for the season. Reports received during the past three weeks indicate that the epidemic of influenza in Great Britain, confirmed as due to type A2 influenza virus, is continuing to spread. The epidemic of influenza reported from Japan, centering around metropolitan Tokyo, is likewise continuing, and has been confirmed as due to influenza type B. An epidemic characteristic of influenza, but not yet laboratory confirmed, has been reported from Samoa." - p. 2I. Summary of information-- II. Current status of influenza in the United States-- III. Current analysis of influenza and pneumonia mortality-- IV. International notesFebruray 10, 1961This report was prepared in the Surveillance Section, Communicable Disease Center by Theodore C. Eickhoff, M. D., Chief, Influenza Surveillance Unit, with the Assistance of the Statistics Section, Robert E. Serfling, Ph.D., Chief."For administrative use." - cover"Information contained in this report is a summary of data reported to CDC by State Health Departments, Epidemic Intelligence Service Officers, collaborating influenza diagnostic laboratories, and other pertinent sources. Much if it is preliminary in nature and is primarily in nature and is primarily intended for those involved in influenza control activities. It is understood that the contents of these report will not be released to the press, except by the Office of the Surgeon General, Public Health Service, U.S. Department of Health, Education and Welfare. State Health Officers, of course, will judge the advisability of releasing any information from their own state." - cove

CDC influenza surveillance report no. 58, January 16, 1961

"In the 9-month interval since the publication of the last CDC Influenza Surveillance Report, No. 57, April 13, 1960, the occurrence of influenza in the United States has been markedly limited in both distribution and frequency. Sporadic reports of laboratory confirmed cases of influenza A, occurring during the summer and fall months of 1960, have come to the attention of the Influenza Surveillance Unity. No outbreaks for influenza of unusual concentrations or cases of influenza-like disease have been reported to this unit thus far during the present season. Analysis of current deaths due to influenza and pneumonia received from 108 cities in the United States reveals that the number of deaths are entirely within the expected limits of normal for the season in the United States as a whole as well as in each of the 9 geographic regions. During the past 9 months scattered reports have been received of influenza occurring in Central and South America, and Europe. A recent report indicates that laboratory-confirmed type A2 influenza is currently epidemic in England. During the fall months the Public Health Service carried out an influenza immunization program encouraging the routine use of influenza vaccine among specific high risk-groups, the aged, the chronically ill, and pregnant women, in order to reduce the extent of excess influenza-associated mortality." - p. 2I. Summary of information-- II. Current status of influenza in the United States-- III. Current analysis of influenza and pneumonia mortality-- IV. International notes -- V. In\ufb02uenza immunizationJanuary 16, 1961This report was prepared in the Surveillance Section, Communicable Disease Center by Theodore C. Eickhoff, M. D., Chief, Influenza Surveillance Unit, with the Assistance of the Statistics Section, Robert E. Serfling, Ph.D., Chief."For administrative use." - cover"Information contained in this report is a summary of data reported to CDC by State Health Departments, Epidemic Intelligence Service Officers, collaborating influenza diagnostic laboratories, and other pertinent sources. Much if it is preliminary in nature and is primarily in nature and is primarily intended for those involved in influenza control activities. It is understood that the contents of these report will not be released to the press, except by the Office of the Surgeon General, Public Health Service, U.S. Department of Health, Education and Welfare. State Health Officers, of course, will judge the advisability of releasing any information from their own state." - cove

CDC influenza surveillance report no. 60, May 5, 1961

"In the three month interval since the publication of the last CDC Influenza Surveillance Report, No. 59, February 10, 1961, reports of the occurrence of epidemic influenza or unusual concentrations of cases of influenza-like disease within the United States have been distinctly limited. Outbreaks of influenza were reported during March and early April from New Haven, Connecticut, and New York City. There are no reports of influenza activity current within the continental United States. Current analysis of influenza and pneumonia deaths through the week ending April 29, 1961, reveals that the number of deaths are within the expected limits of normal for the season. Internationally, major outbreaks of influenza occurred in Great Britain during January, February, and March 1961, due to influenza A2. In January and February, a major epidemic of influenza B occurred in Japan. There were in addition reports of outbreaks of influenza or influenza-like disease of varying extent in Norway, American Samoa, and Canada. This will be the last Influenza Surveillance Report of the current series. Although the surveillance of acute respiratory diseases will continue as a routine function of the Surveillance Section, CDC, no further such reports will be issued, barring unusual developments, until the Fall of 1960. We wish to take this opportunity to thank all those who contributed information of either a positive or negative character to the Influenza Surveillance Unit during the recent season, and participated in making the influenza surveillance program operative in assessing the trends influenza within the United States." - p. 2I. Summary of information -- II. Review of the occurrence of influenza in the United States, Winter 1960 -Spring 1961. -- III. Review of influenza and pneumonia mortality in the United States, Winter 1960 - Spring 1961. -- IV. International notes --May 5, 1961.This report was prepared in the Surveillance Section, Communicable Disease Center by Theodore C. Eickhoff, M. D., Chief, Influenza Surveillance Unit, with the Assistance of the Statistics Section, Robert E. Serfling, Ph.D., Chief."For administrative use." - cover"Information contained in this report is a summary of data reported to CDC by State Health Departments, Epidemic Intelligence Service Officers, collaborating influenza diagnostic laboratories, and other pertinent sources. Much if it is preliminary in nature and is primarily in nature and is primarily intended for those involved in influenza control activities. It is understood that the contents of these report will not be released to the press, except by the Office of the Surgeon General, Public Health Service, U.S. Department of Health, Education and Welfare. State Health Officers, of course, will judge the advisability of releasing any information from their own state." - cove

CDC influenza surveillance report no. 51, January 15, 1960

"In the ten-day interval since the publication of the CDC Influenza Surveillance report #50, reports of outbreaks of respiratory disease have been received with increasing frequency, Texas and the southern half of California, in particular, report widespread waves of febrile respiratory disease. Major urban epidemics are current in Los Angeles, California, several cities in Texas, urban epidemics are current in Las Angeles, California, several cities in Detroit, Michigan, and declining in Columbus, Ohio, Other states reporting localized outbreaks are Iowa, Kentucky, Ohio, Tennessee, Nevada, Utah, and Hawaii. The outbreaks in Detroit, Michigan and Columbus, Ohio are confirmed as being due to A2 influenza virus. This strain has also been isolated in California, Iowa, and Texas. One isolation of Al influenza virus is reported from Texas. The current analysis of influenza and pneumonia mortality reveals that excess mortality is being reported for the first time since last spring. Most of this excess is found in the East North Central and East South Central areas of the country. No signi\ufb01cant departure from the expected seasonal levels are yet seen in the Western and Pacific Coast areas." - p. 2I. Summary of information -- II. Current status of influenza in the United States -- III. Current analysis of in\ufb02uenza and pneumonia mortality -- IV. International notesJanuary 15, 1960.This report was prepared by Theodore C. Eickhoff, M. D., Epidemic Intelligence Service Officer, Surveillance Section, Epidemiology Branch, CDC."For administrative use." - cover"Information contained in this report is a summary of data reported to CDC by State Health Departments, Epidemic Intelligence Service Officers, collaborating influenza diagnostic laboratories, and other pertinent sources. Much if it is preliminary in nature and is primarily in nature and is primarily intended for those involved in influenza control activities. It is understood that the contents of these report will not be released to the press, except by the Office of the Surgeon General, Public Health Service, U.S. Department of Health, Education and Welfare. State Health Officers, of course, will judge the advisability of releasing any information from their own state." - cove

CDC influenza surveillance report no. 56, February 26, 1960

"A nation-wide decline in the reporting of influenza has been evident in the 2-week interval since the publication of CDC Influenza Surveillance Report No. 55, February 12, 1960. A few localized outbreaks and unnumbered sporadic cases are continuing to occur, although the national peak of morbidity has been passed, and all major urban outbreaks are subsiding. An increased amount of febrile respiratory disease or discrete outbreaks of clinical influenza have been reported in a total of 43 states including the District of Columbia. Type A2 influenza virus has been isolated in a total of 31 states including the District of Columbia; serologic confirmation of influenza A infection has been reported from five additional states. Type B influenza virus has been isolated in two states. Mortality due to pneumonia and influenza reported form 108 cities, after increasing slightly during the week ending February 13th, remained at essentially the same level during the week ending February 20th, and seems to have reached its peak. Although marked decreases occurred in several areas, levels remained well above the "epidemic threshold" 7 of the 9 geographic regions for the week ending February 20th. Excess mortality is notably absent in the Middle Atlantic and East South Central regions." - p. 2I. Summary of information-- II. Current status of influenza in the United States-- III. Current analysis of influenza and pneumonia mortality-- IV. International notesFebruary 26, 1960.This report was prepared by Theodore C. Eickhoff, M. D., Epidemic Intelligence Service Officer, Surveillance Section, Epidemiology Branch, CDC."For administrative use." - cover"Information contained in this report is a summary of data reported to CDC by State Health Departments, Epidemic Intelligence Service Officers, collaborating influenza diagnostic laboratories, and other pertinent sources. Much if it is preliminary in nature and is primarily in nature and is primarily intended for those involved in influenza control activities. It is understood that the contents of these report will not be released to the press, except by the Office of the Surgeon General, Public Health Service, U.S. Department of Health, Education and Welfare. State Health Officers, of course, will judge the advisability of releasing any information from their own state." - cove

CDC influenza surveillance report no. 52, January 22, 1960

"In the one-week interval since the publication of CDC Influenza Surveillance Report No. 51, January 15, 1960, reports have been received both of the continuation and extension of known outbreaks of clinical influenza, and of the appearance of such outbreaks in new areas of the country. The outbreaks in Southern California and Texas are continuing; other states reporting sharp rises in the occurrence of febrile respiratory disease include Arizona, Massachusetts, Mississippi, Ohio, Pennsylvania, West Virginia, and the District of Columbia. Significant urban epidemics appear to be occurring in Boston and Pittsburgh, continuing in Los Angeles and the major cities of Texas, and declining in Detroit and Columbus. Virus isolations continue to be reported with increasing frequency. Not unexpectedly, the Los Angeles outbreak was confirmed as due to A2 influenza virus. Other states in has been isolated, not previously reported, Pennsylvania, and the District of Columbia. This virus thus far has been isolated in 10 states during the current influenza season. The isolation of type B influenza virus is reported in Louisiana. The analysis of weekly influenza and pneumonia mortality reveals that the total for 106 cities for the week ending January 16th has again increased, and exceeds the 'epidemic threshold' for the second consecutive week. The excess mortality reported is most pronounced in the Paci\ufb01c region, but is also contributed to by the East North Central, West South Central, and Mountain Regions" - p. 2I. Summary of information -- II. Current status of influenza in the United States -- III. Current analysis of influenza and pneumonia mortalityJanuary 22, 1960."For administrative use." - cover"Information contained in this report is a summary of data reported to CDC by State Health Departments, Epidemic Intelligence Service Officers, collaborating influenza diagnostic laboratories, and other pertinent sources. Much if it is preliminary in nature and is primarily in nature and is primarily intended for those involved in influenza control activities. It is understood that the contents of these report will not be released to the press, except by the Office of the Surgeon General, Public Health Service, U.S. Department of Health, Education and Welfare. State Health Officers, of course, will judge the advisability of releasing any information from their own state." - cove

CDC influenza surveillance report no. 57, April 13, 1960

"Since the publication of the last CDC Influenza Surveillance Report No. 56, February 26, l960, the number of outbreaks of influenza and influenza-like diseases reported has diminished markedly. During the past 4 weeks, no reports of epidemic influenza have come to the attention of the Surveillance Section, CDC. The current analysis of influenza and pneumonia mortality, as reported from 108 United States cities, reveals that mortality due to these causes is again below the epidemic threshold, thus ending an unexpectedly high epidemic wave that extended over the preceding 13 weeks. As will be shown in Section III, the amount of excess mortality during the Winter 1959-60 epidemic was greater than in either of the waves of excess mortality associated with the 1957-58 Asian pandemic although the combined total of excess mortality of the two waves exceeded the excess mortality during the past Winter. A summary of data relating to the laboratory characterization of strains of influenza virus received at the WHO International Influenza Center for the Americas has been prepared by Dr. Roslyn Q. Robinson, Virus and Rickettsia Section, CDC, Montgomery, Alabama, and is included in this issue. During the first three months of 1960, epidemic influenza was reported from widespread areas of Europe and Scandinavia, as well as the Far East. Type A2 influenza virus has been identified in association with many of these outbreaks. This will be the last Influenza Surveillance Report of the current series. Although the surveillance of acute respiratory diseases will be issued, barring unusual developments, until the Fall of 1960. The Surveillance Section wishes to take this opportunity to thank all those who contributed so effectively to the surveillance of influenza during the recent outbreak and in making the influenza surveillance program operative in assessing the trends of epidemic influenza within the United States." - p. 2I. Summary of information-- II. Review of influenza in the United States, Winter, 1960 -- III. Current analysis of influenza and pneumonia mortality -- IV. 1960 Influenza virus isolates -- V. International notesApril 13, 1960.This report was prepared by Theodore C. Eickhoff, M. D., Epidemic Intelligence Service Officer, Surveillance Section, Epidemiology Branch, CDC."For administrative use." - cover"Information contained in this report is a summary of data reported to CDC by State Health Departments, Epidemic Intelligence Service Officers, collaborating influenza diagnostic laboratories, and other pertinent sources. Much if it is preliminary in nature and is primarily in nature and is primarily intended for those involved in influenza control activities. It is understood that the contents of these report will not be released to the press, except by the Office of the Surgeon General, Public Health Service, U.S. Department of Health, Education and Welfare. State Health Officers, of course, will judge the advisability of releasing any information from their own state." - cove

CDC influenza surveillance report no. 62, January 5, 1962

"Influenza B has been identified in outbreaks of respiratory illness in eight States. They are California, Oregon, Washington, Arizona, Colorado, Missouri, Illinois, and Florida. Utah had reported outbreaks of respiratory disease; specimens have been collected and are being analyzed in the laboratory. In Canada, the Province of Saskatchewan has confirmed epidemics of Influenza B. Several areas in England and Wales have reported outbreaks associated with the Influenza B virus. No confirmed outbreaks of Asian influenza have been reported in either Canada or the United States during the present season. No significant excess pneumonia and influenza mortality has been reported for the United States during the current influenza season, either nationally or by region. Influenza deaths in England and Wales, by contrast, have been steadily rising. Preliminary strain analysis comparing present with past strains of Influenza B indicates some antigenic change between present strains and the B/Great Lakes/1954 strain. However, typing of isolates or serodiagnosis should not present difficulty using the materials previously supplied by the WHO Influenza Center for the Americas.." - p. 3I. Summary of information -- II. Epidemic reports -- III. Press release -- IV. Laboratory report. Antigenic variation -- V. Weekly pneumonia and in\ufb02uenza deathsJanuary 5, 1962.This report was prepared in the Surveillance Section, Communicable Disease Center by George C. Denniston, M. D., Chief, Influenza Surveillance Unit, with the Assistance of the Statistics Section, Robert E. Serfling, Ph.D., Chief."For administrative use." - cover"Information contained in this report is a summary of data reported to CDC by State Health Departments, Epidemic Intelligence Service Officers, collaborating influenza diagnostic laboratories, and other pertinent sources. Much if it is preliminary in nature and is primarily in nature and is primarily intended for those involved in influenza control activities. It is understood that the contents of these report will not be released to the press, except by the Office of the Surgeon General, Public Health Service, U.S. Department of Health, Education and Welfare. State Health Officers, of course, will judge the advisability of releasing any information from their own state." - cove

CDC influenza surveillance report no. 50, January 5, 1960

"CDC, from three separate states: Texas, Ohio, and Tennessee. One of these outbreaks has been confirmed as being due to A2 influenza virus. Responsible public health officers are urged to be alert for outbreaks of febrile respiratory disease, and the possibility that influenza may appear in epidemic form on a broader scale. All laboratories collaborating with the International Influenza Center are urged to report any isolations of influenza virus and to submit strains to Dr. Roslyn Q. Robinson, CDC Virus and Rickettsia Section, P.O. Box 61, Montgomery, Alabama for strain characterization." - p. 2I. Summary of information -- II. Current status of influenza in the United StatesJanuary 5, 1960.This report was prepared by Theodore C. Eickhoff, M. D., Epidemic Intelligence Service Officer, Surveillance Section, Epidemiology Branch, CDC."For administrative use." - cover"Information contained in this report is a summary of data reported to CDC by State Health Departments, Epidemic Intelligence Service Officers, collaborating influenza diagnostic laboratories, and other pertinent sources. Much if it is preliminary in nature and is primarily in nature and is primarily intended for those involved in influenza control activities. It is understood that the contents of these report will not be released to the press, except by the Office of the Surgeon General, Public Health Service, U.S. Department of Health, Education and Welfare. State Health Officers, of course, will judge the advisability of releasing any information from their own state." - cove