public async Task <int> HandleAsync(GetRegisteredVaccineCountQuery message, CancellationToken cancellationToken)
{
var allManufacturers = await _entityRepositoryFactory.Create <Manufacturer>()
.Query()
.FetchMany(m => m.TradeMarks)
.Where(m => m.HasMedicalLicense)
.ToListAsync(cancellationToken);
return(allManufacturers.SelectMany(m => m.TradeMarks)
.Count(tm => tm.IsActiveVaccine()));
}
