Production Shifts and Global Health Organization Updates Delay Dutch Flu Vaccine Deliveries
Vulnerable residents across the Netherlands face extended waiting times for their annual influenza vaccinations this autumn due to manufacturing adjustments. General practitioners will receive batches later than usual for those who would have received them in October. Production bottlenecks stem from continuous mutations in influenza viruses. The World Health Organization determines which variants will likely circulate, and this year all three variants in the vaccine had to be replaced, according to Ted van Essen, a former general practitioner and influenza expert. Residents over sixty years old who have never received an invitation may have been missed due to errors in the computer system used by general practitioners to identify patients.
Natural Immunity Limitations Versus Vaccine Efficacy
Contracting the influenza virus generates natural immunity, but medical professionals advise against relying on infection over vaccination because one becomes much sicker from the disease than from the vaccination. Protection from natural infection fades quickly as the virus changes every year. Vaccine effectiveness fluctuates yearly. The RIVM calculates the average of the last 10 years, which is 40 percent. The vaccine is adjusted every year to the variants expected at that time. Once every 10 years the choice is slightly off, which is called a ‘mismatch’. In a mismatch of one of the three strains in the vaccine, effectiveness is lower than without a mismatch, as observed during the 2015 influenza season. Side effects following vaccination are often coincidental rather than causal. The vaccine is usually administered in November, which is also the time when many cold viruses circulate. Patients who experience respiratory symptoms shortly after an injection contract a different virus because the influenza vaccine is a dead vaccine and cannot cause the flu.
Frequently Asked Questions About the Influenza Campaign
Why are this year’s flu vaccine deliveries arriving later than usual?
Manufacturing adjustments required replacing all three viral strains in the vaccine, creating distribution delays primarily affecting October shipments to general practices.
Can residents over sixty get vaccinated without receiving an invitation letter?
If you are over 60 and have never received an invitation, something has gone wrong in the computer system used by the general practitioner.
Can patients receive their influenza and coronavirus vaccinations during the same appointment?
If you get the vaccinations at the same time, you only have to get them once.
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