The United Nations Children’s Fund says an estimated 169 million children missed out on the first dose of the measles vaccine between 2010 and 2017, or 21.1 million children a year on average globally.
Low- and middle-income countries, including Nigeria contributes significantly to this index.
In 2017, Nigeria had the highest number of children under one year of age who missed out on their first dose of vaccine, at nearly 4 million.
The United States tops the list of high-income countries with the most children not receiving the first dose of the vaccine between 2010 and 2017, at more than 2.5 million.
It is followed by France and the United Kingdom, with over 600,000 and 500,000 unvaccinated infants, respectively, during the same period.
Followed by India (2.9 million), Pakistan and Indonesia (1.2 million each), and Ethiopia (1.1 million).
The Executive Director, UNICEF, Henrietta Fore, in a statement attributed the global measles wide outbreak to children who missed their first vaccination.
She said the widening pockets of unvaccinated children have now created a pathway to the measles outbreaks hitting several countries around the world today.
“The ground for the global measles outbreaks we are witnessing today was laid years ago, the measles virus will always find unvaccinated children’’
‘‘If we are serious about averting the spread of this dangerous but preventable disease, we need to vaccinate every child, in rich and poor countries alike.” she said
According to UNICEF, the first three months of 2019, more than 110,000 measles cases were reported worldwide – up nearly 300 per cent from the same period last year. An estimated 110,000 people, most of them children, died from measles in 2017, a 22 per cent increase from the year before.
But these deaths could have been averted if the two doses of the measles vaccine which are essential to protect children from the diseases were administered.
However, due to lack of access, poor health systems, complacency, and in some cases fear or skepticism about vaccines, the global coverage of the first dose of the measles vaccine was reported at 85 per cent in 2017, a figure that has remained relatively constant over the last decade despite population growth. Global coverage for the second dose is much lower, at 67 per cent.
The World Health Organization recommends a threshold of 95 per cent immunization coverage to achieve so-called ‘herd immunity’.
In high income countries, while coverage with the first dose is 94 per cent, coverage for the second dose drops to 91 per cent, according to the latest data.
Worldwide coverage levels of the second dose of the measles vaccines are even more alarming.
Of the top 20 countries with the largest number of unvaccinated children in 2017, 9 have not introduced the second dose. Twenty-countries in sub-Saharan Africa have not introduced the necessary second dose in the national vaccination schedule, putting over 17 million infants a year at higher risk of measles during their childhood.
According to Henrietta Fore, “Measles is far too contagious,” “It is critical not only to increase coverage but also to sustain vaccination rates at the right doses to create an umbrella of immunity for everyone.”