aarogya.com
  • Home
  • Complementary Medicine
    • Ayurveda
    • Homeopathy
    • Naturopathy
    • Acupressure
    • Acupuncture
    • Aromatherapy
    • Batch Flower Remedies
    • Home Remedies
    • Massage
    • Yoga
    • Meditation
    • Reiki
    • Bodywork
    • Medical Palmistry
  • Conditions & Diseases
    • Acute Diarrheal Disease
    • Appendicitis
    • Blindness
    • Brucellosis
    • Chicken Pox
    • Conjunctivitis
    • Dysentery
    • Hookworm
    • Japanese Encephalitis
    • Lymphatic Filariasis
    • Plague
    • Rubella
    • Typhoid Fever
    • Yellow Fever
    • Allergy
    • Arthritis
    • Blood Pressure
    • Computer Health Hazards
    • Chikungunya Fever
    • Dengue
    • Guinea Worm
    • Influenza
    • Leprosy
    • Malaria
    • Poliomyelitis
    • Tetanus
    • Whooping Cough
    • Viral Hepatitis
    • Amebiasis
    • Asthma
    • Bronchitis
    • Diagnostic Tests
    • Cholera
    • Diphtheria
    • Hepatitis
    • Irritable Bowel Syndrome
    • Leptospirosis
    • Measles
    • Rabies
    • Tuberculosis
    • Yaws
  • Family Health
    • Children's Health
    • Diet & Nutrition
    • First Aid
    • Fitness
    • Humor & Trivia
    • Men's Health
    • Preventive Health
    • Senior's Health
    • Senior Citizen Corner
    • Teen’s Health
    • Vets and Pets
    • Women’s Health
  • Health Resources
    • Blood Donation
    • Career Opportunities
    • Daily Health Tips
    • Health Programs
    • Featured Hospitals
    • Medical Education
    • Health Professional's Negligence
    • Medical Tourism
    • Video Eye
    • Rural Health
    • Patients' Rights Forum
  • Insurance
    • Euthanasia
    • Health Insurance
    • Health Insurance Policies
    • Insurance Companies
    • Medical Ethics
    • Medical Jurisprudence
    • Research
    • Telemedicine
    • Compare Health Insurance
  • Sex & Sexuality
    • What is Sex & Sexuality?
    • FAQs
    • Marriage & Pregnancy
    • Sex Education
  • Support Groups
    • Addiction
    • Aids
    • Cancer
    • Epilepsy
    • Swine Flu
    • Blood Search
    • Vivah
    • Health Directory
    • Alzheimer's Disease
    • Medical Support Groups
    • Cardiology
    • Depression
    • Depression Screening Test
    • Diabetes
    • Disability
    • Kidney
    • Obesity
    • Pregnancy
    • Schizophrenia
    • Vitiligo
Aarogya.com
Marathi | Gujarati | Register | Login
  • Home
  • Conditions & Diseases
  • Influenza
  • Mode of Transmission of Influenza

Mode of Transmission of Influenza

  • Print
Details
Hits: 31948
Influenza is spread mainly from person to person by droplet infection or droplet nuclei created by sneezing, coughing or talking. The portal of entry of the virus is the respiratory tract.

Incubation Period for Influenza
The incubation period is about 18 to 72 hours.

Pathogenesis and Clinical Features of Influenza
The virus enters the respiratory tract and causes inflammation and necrosis of the superficial epithelium of the tracheal and bronchial mucosa, followed by secondary bacterial invasion. There is no viraemia. Both viruses cause the same symptoms – fever, chills, aches and pains, coughing and generalized weakness. Fever lasts from one to five days, averaging about three days in adults. The most dreaded complication is pneumonia, which should be suspected if fever persists beyond four or five days, or recurs abruptly after convalescence.

Diagnosis of Influenza
Virus isolation
Virus isolation
Laboratory Diagnosis of Influenza
Since clinical diagnosis is difficult except during epidemics, laboratory methods are needed to confirm the diagnosis. These are:
Virus Isolation
Nasopharyngeal secretions are the best specimens for obtaining large quantities of virus–infected cells. The virus can be detected by the indirect fluorescent antibody technique. However, egg inoculation is required for virus isolation and antigenic analysis.

Paired Sera
A sero diagnosis of influenza A or B can be made by the examination of two serum specimens from a patient. One taken as early as possible in the acute phase of the disease (not later than the fifth day), and another taken about 10 to 14 days after the onset, i.e. the convalescent stage of illness. The titer of influenza antibodies in the human sera is so variable that only by detecting a rise in Complement Fixing (CF) antibodies during the course of illness, can a diagnosis be established. Hence, the need for two specimens. Fourfold or greater rise in titer are considered diagnostic of infection. At least 2ml, preferably 5ml, of each serum should be sent, the serum being removed from the clot before dispatch. The two sera should be sent together to the testing laboratory (the first serum should be kept in the refrigerator till the second is available to send with it). Serological examination is fairly satisfactory but slower, and does not provide information about the new strains which are wanted for study in relation to the spread of the disease.

In India, facilities for isolation of the influenza virus are available at:
Government of India Influenza Center, Pasteur Institute, Coonoor, South India.
  • Haskine Institute, Mumbai.
  • School of Tropical Medicine, Calcutta.
  • All India Institute of Medical Sciences, New Delhi.
  • Vallabhbhai Patel Chest Institute, Delhi, and
  • Armed Forces Medical College, Pune.

11

Influenza

  • Prevention & Treatment of Influenza
  • Mode of Transmission of Influenza
  • Causative Factors of Influenza

Expert's Advice on Typhoid

Typhoid

Typhoid: Protection and purification of drinking water supplies, improvement of basic sanitation, and promotion of food hygiene are essential measures to interrupt transmission of typhoid fever. read more…

Introducing Digital Practice for Doctors & Healthcare professionals
Swine Flu
National Award for Outstanding achievement by a Non-Professional - Tushar Sampat
Health Professional's Negligence
Health Professional's Negligence
Records of published articles in the newspapers helps common people about precautions to be taken while seeking the services from health professionals and also helps health professionals to rectify the negligence.
read more…
Specialties
Common Symptoms


Aarogya Network

aarogya.com aims to be India’s leading comprehensive health information portal. The site has sections, which cover almost all the medical specialties and give useful information on various diseases. To enhance its reach, the content is available in Indian languages too. We were the first health website to introduce online support groups. Addiction support and Epilepsy support are examples of some very active and vibrant communities.

» Click here to see all our support groups

Subscribe to Our Newsletter

 Get health related new information.

Pune Aarogya
Digital Media Dedicated to Healthcare of Punekars

Health Tools

  • Health Directory
  • Message Board
  • Health Calculators
  • Depression Screening Test

About Aarogya.com

aarogya.com aims to be India’s leading comprehensive health information portal. The site has sections, which cover almost all the medical specialties

Read more...

Suggestions

This is YOUR site, so if you have suggestions or feedback on how we can improve it for you, please let us know! We do our best to keep up!

Read more...

User Comments

“My name is Paulette Conners and I just had to send you an email thanking you since one of the pages on your site was very helpful!”

  • About Us
  • Company Profile
  • Contact Us
  • Privacy Policy
  • Feedback
  • Disclaimer
  • Sitemap
  • Invite Your Friends

© 2017 www.aarogya.com. All Rights Reserved.