Developing an effective flu shot is hard as doctors must try to predict what strains will be active, which is particularly tricky as strains evolve and mutate - and they must do it far in advance of the actual season so manufacturers will have time to make enough vaccine to meet demand, explained Blumberg.
And, as health officials predicted, cases of less severe influenza B infections have now eclipsed cases of more severe influenza A infections.
Looking at the data for recent weeks, CDC spokeswoman Kristen Nordlund said, "we're still continuing to see a decline in influenza-like activity".
In fact, this year's vaccine includes the B strain that is most active now, Blumberg said.
He explained that for a pandemic to happen, there needs to be a "dramatic shift" in the flu virus - something we can expect to see roughly every 20 to 40 years.
After the US Centers for Disease Control and Prevention (CDC) released the stats for the 2017-2018 influenza season, in which there were a reported 97 influenza-related paediatric deaths, GlobalData has reiterated its belief to move away from the traditional chicken egg-based approach of mass production of flu vaccines.
The total number of flu cases reported in week nine went down from week eight, decreasing from 765 to 648.
The flu has been spreading quickly in California - and it's not over yet.
Karti Chidambaram's CBI custody extended by 3 days
Meanwhile, the CBI court has also asked the investigation agency to file Karti's bail application which will be heard on March 15. The ED opposed Sibal's contention that Karti should be allowed to withdraw the petition and approach the high court.
So far this season, five children have died from the flu.
Flu-linked hospitalization rates continued to rise - from 81.7 per 100,000 people for the week ending February 24, to 86.3 per 100,000 people for the week ending March 3, the CDC data showed.
"We can not say for sure which virus will be circulating", said Wenqing Zhang, head of the WHO's global influenza programme.
Caused by viruses, flu is a contagious respiratory illness with mild to severe symptoms that can sometimes lead to death.
This season has been a heavy one with the death toll from this flu season reaching 118, Georgia's Department of Public Health reported. No other northern IN counties had five or more flu-related deaths. So, you know the deal - wash your hands, cover your cough (preferably not with your hand), and stay home if you're sick.
The Democrat says the number of flu-stricken people requiring hospitalization dropped for the fourth straight week to just around 1,070.
He said: "Flu is very infectious and there is nothing much you can do to stop it moving about the planet".
If you're going to implement a mandatory flu vaccine policy, you must be careful.