All vaccines have the properties of reactogenicity, that is, the ability to cause local and general symptoms, but it is minimal in modern vaccines. Between reactions and complications it is difficult to draw a line, the latter include serious disorders. An acute episode can either have a cause-and-effect relationship with the vaccine, or be a coincidence; it should be considered an "adverse event" before the end of the investigation.
Complications after vaccinations are interpreted by both specialists and a large number of people without special (and sometimes even medical) knowledge, so the frequency of more rare events can be reliably established only through post-licensing surveillance.
The child is in the post-vaccination period for the first six months of his life, so that any of his diseases can, in principle, be attributed to such a state as complications after vaccination.
Small redness, tenderness and swelling at the injection site usually do not require active treatment. Cold "subcutaneous infiltrates flow torpid, their resorption is sometimes accelerated by local procedures (" honey cakes ", balsamic ointments). Abscesses and suppuration require antibacterial therapy (oxacillin, cefazolin, etc.), and according to indications - surgical intervention.
Complications after BCG are considered as a local tuberculous process and should be treated by a pediatric TB specialist. Other vaccinations during treatment for complications are strictly prohibited.
Monitoring postvaccinal complications (PVO) is a system of constant monitoring of the safety of MIBP in the conditions of their practical application. The monitoring tasks are also to determine the nature and frequency of complications after vaccination for each drug and the factors contributing to the development of complications after vaccination.