Worldwide Activity of Influenza 1995 & vaccination

Worldwide Activity of Influenza 1995 & vaccination

influenza activity occurred From October 1994 through August 1995, at low to moderate levels. Here, you can find all you want about influenza 1995 and vaccination.

Which kind of virus was predominant in 1995?

 Influenza activity usually was connected with the co-circulation of influenza types A and B viruses.

 The predominant influenza A subtype was influenza A(H3N2), but during this period, the isolation of influenza A(H1N1) viruses increased and was the most frequently isolated influenza virus in Australia from March through August 1995.

Six continents of the world and influenza 1995

1-Africa and influenza 1995

In Madagascar, circulation of influenza A(H3N2) had begun during January and had continued through April; influenza A(H1N1) was isolated in Madagascar, during April.

In South Africa, influenza A(H1N1) and influenza A(H3N2) viruses were isolated from samples collected from respiratory virus isolation through the period of May to July.

During July, Influenza B viruses were detected in South Africa.

 In Zambia during June, Influenza A(H3N2) was isolated.

2-Asia and influenza 1995

every month from March through June in Asia, Influenza A(H1N1), A(H3N2), and influenza B viruses were isolated.

 Influenza A(H1N1) viruses were isolated in Hong Kong during March and April, Guam during May, and Thailand during April, May, and July.

During outbreak-level activity in Taiwan in the period of April to June, Influenza A(H1N1) and influenza B viruses were isolated.

 Other countries reporting influenza B activity connected with sporadic cases or outbreaks included Hong Kong, Japan, China, Korea, Singapore, and Thailand.

In China, Influenza A(H3N2) viruses were isolated in connection with sporadic and outbreak activity during April and from sporadic cases during June.

In Korea and Thailand, Influenza A(H3N2) viruses also were isolated during March, in Guam during March and May, in Hong Kong during March and July, and in Japan during April.

Every month from March through June, influenza A activity was reported In Singapore, influenza A (H3N2) isolates were subtyped during March, May, and June.

in Malaysia, during March Additional influenza A viruses, unknown subtypes, were identified by antigen-detection methods.

3-Europe and influenza 1995

In Europe, activity began in Portugal with an outbreak of influenza B virus during October 1994 and continued from March through June. During this period, Influenza A(H3N2), A(H1N1), and influenza B viruses were isolated.

from Romania and Bulgaria, Outbreak activity was last reported during May.

Circulation of influenza A(H1N1) viruses increased in the period from March to  May and was connected with an outbreak in members of a military unit in Bulgaria.

In France, Detection of both influenza A and influenza B viruses continued during June.

4-North America and influenza 1995

During the 1994-95 season, Influenza A(H3N2) viruses predominated, but influenza A(H1N1) and B also were isolated.

In the United States, Following peak activity during February through early March, influenza A(H3N2), A(H1N1), and influenza B viruses continued to be isolated during March-June every month.

In Arizona during July, Influenza A(H1N1) was isolated from one patient. The number of influenza A(H1N1) isolates increased from February to May, most were collected during May.

In Canada, influenza activity occurs in Late-season.

During the week ending June 3, The most recent detection of influenza B virus was reported and during July and August, reports of influenza A virus detection or isolation were continued.

In Canada during the latter part of the influenza season, influenza A(H1N1) viruses were reported.

5- Central and South America and influenza 1995

In South America, Influenza A and influenza B viruses were isolated during the 1994-95 influenza season with influenza A predominating.

from February through April, Brazil reported detection of influenza A.

 In Chile, influenza outbreaks were detected from May to July; influenza A predominated, but also influenza B was detected.

In Argentina, diagnosis of the first case of influenza A was in late May and outbreaks were reported during June and July; influenza A predominated, but also influenza B was detected.

in Uruguay, Reports of influenza-like illness increased from May to July, and by antigen-detection methods, influenza A virus was identified.

in Panama during June, Influenza A virus was detected in one patient followed by a single detection of influenza B virus during July.

All influenza A viruses from Brazil, Argentina, and Chile that were identified by serologic testing were influenza A(H3N2).

No reports of influenza A(H1N1) isolates from Central or South America.

6-Oceania and influenza 1995

in Australia, the influenza season began early with outbreaks in the Northern Territory at the end of March. Both influenza A(H1N1) and influenza B viruses were detected during the outbreak, with predomination of influenza A(H1N1) viruses. through the beginning of July, Influenza increased and remained stable from mid-July through the beginning of August. When the season progressed, the number of influenza B isolates increased; however, influenza A(H1N1) viruses were still more prevalent while Influenza A(H3N2) viruses were rarely isolated.

 In New Zealand, influenza B predominated through July, but the proportion of influenza A(H3N2) viruses detected increased during July. At the end of July, Both influenza A(H3N2) and influenza B viruses were associated with outbreaks.

What do you know about The influenza vaccine?

The influenza vaccine is annually updated to include viruses that are antigenically identical to the strains of the three distinct groups of influenza viruses that have been detected worldwide. Most of the detected influenza viruses since March 1995 are antigenically identical to the 1995-96 influenza vaccine strains.

Who should be vaccinated against influenza?

Influenza vaccination is recommended by the Advisory Committee on Immunization Practices for :

1- 65 years old persons.

 2- persons who stay in nursing homes or chronic-care facilities.

3- persons with pulmonary disorders or chronic cardiovascular diseases, including children with asthma.

4- persons who required hospitalization during the previous year because of diabetes and other chronic metabolic diseases, renal dysfunction, hemoglobinopathies, or immunosuppression.

5- children and adolescents who are receiving long-term aspirin therapy and who may be at risk for developing Reye syndrome after influenza.

 6- healthcare workers.

 7-Women who will be in the third trimester of pregnancy during the influenza season.