Unwanted reactions observed during clinical trials
Data on frequency in children are based on a generalized analysis of adverse reactions observed after the first vaccination (3,088 patients) in 8 clinical studies conducted with the use of FSOME-IMMUN® Junior in children aged 1-15 years. The frequency of systemic adverse reactions observed after the second and third vaccinations was lower than after the first vaccination. After the first, second and third vaccinations, a similar reaction rate at the injection site was observed.
Classes and systems of organs (CSR) | Unwanted reaction | Frequency |
Violations of the blood and lymphatic system | Lymphadenopathy | Infrequent |
Disorders of metabolism and nutritional status | Decreased appetite | Frequent |
Mental disorders | Sleep disorders | Frequent |
| Anxiety1 | Frequent |
Disturbances from the nervous system | Headache | Frequent |
| Sensory disorders | Rare |
| Dizziness | Rare |
Hearing disorders | Vertigo | Rare |
Classes and systems of organs (CSR) | Unwanted reaction | Frequency |
Disorders from the gastrointestinal tract tract | Nausea | Frequent |
Vomiting | Frequent |
Diarrhea | Rare |
Abdominal pain | Infrequent |
Dyspepsia | Rare |
Disturbances from the skin and subcutaneous tissues | Hives | Rare |
Disorders of the musculoskeletal apparatus and connective tissue | Myalgia | Frequent |
Arthralgia | Infrequent |
General disorders and reactions at the site of administration | Reactions at the injection site2 | Very Frequent |
Pain at the injection site | Very Frequent |
Redness at the injection site | Frequent |
Sealing at the injection site | Frequent |
Swelling at the injection site | Frequent |
Itching at the injection site | Rare |
Fever3 | Frequent |
Fatigability | Frequent |
Malaise4 | Frequent |
Chills | Infrequent |
The frequency of adverse reactions according to WHO is classified as follows: very frequent (≥1/10), frequent (≥1 / 100, <1/10), infrequent (≥1 / 1000, <1/100), rare (≥1 / 10 000, <1/1000), very rare (<1/10000).
1 The frequency is estimated on the basis of data in children 1-5 years old.
2 More than one phenomenon could have been noted in the subject.
3 Fever was observed more often in children of an earlier age compared with older children (that is, very often or often, respectively). The frequency of fever after the second and third vaccinations is usually lower than after the first vaccination.
4 The frequency is estimated on the basis of data in children 6-16 years old.
Body temperature in children under 3 years old was measured rectally, in children older than 3 years - oral.
The increase in body temperature depends on age and decreases with subsequent vaccination.
In safety studies and dose selection, the degree of increase in body temperature after the first vaccination was as follows:
Children from 1 to 2 years: average (38-39 ° C) in 27.9%; Increased (39,1-40,0 ° С) in 3,4%; a high temperature (more than 40.0 ° C) was not observed.
In children from 3 to 15 years (n= 2519): an average of 6.8%; high in 0.6%; high temperature was not observed.
The increase in body temperature after the second vaccination is usually lower compared to the increase in temperature after the first vaccination: 15.6% (41/263) for children 1 to 2 years and 1.9% (49/2522) for children from 3 up to 15 years.
Undesirable reactions observed in the post-marketing period
The following additional unwanted reactions were registered in the post-marketing period in children receiving FSEM-IMMUN® Junior and classified as rare (≥1/10 000, <1/1000):
Immune system disorders: anaphylactic reaction, hypersensitivity.
Disturbances from the nervous system: encephalitis, convulsions (including febrile), meningism, polyneuropathy, impaired motor function (hemiparesis / hemiplegia, paralysis / paresis of the facial nerve, paralysis, paresis, neuritis).
Disorders from the side of the organ of vision: visual impairment, photophobia, pain in the eyes.
Hearing disorders: tinnitus.
Disturbances from the respiratory system, chest and mediastinal organs: dyspnea.
Disturbances from the skin and subcutaneous tissues: fromyip (erythematous, spotty-papular, vesicular), erythema, pruritus, hyperhidrosis.
Disorders from the musculoskeletal system and connective tissue: pain in the neck, stiffness in the musculoskeletal system (including stiff neck), pain in the limbs.
General disorders and reactions at the site of administration: gait disturbance, flu-like syndrome, asthenia, edema.
Class-specific reactions:
It was reported about the occurrence of the syndrome Hyena-Bare possible with the use of vaccines against tick-borne encephalitis in children.