NEW YORK CITY, Sept 13: The fast-moving Governor of the State of New York,
Ms Kathy Hochul on Friday declared a disaster emergency following detection
of poliovirus in wastewater samples in and around New York City. The declaration
for the entire State of New York is to boost polio vaccination. There is alarming
evidence the virus is spreading in communities asymptomatically.
A case of paralytic polio was identified in Rockland County in July 21 last.
The patient was an unvaccinated adult who developed symptoms of paralysis. This
was the first known infection in the US in nearly a decade.
In August 2022, poliovirus was found in NYC sewage samples. As investigation
continued, poliovirus was detected in sewage samples from four counties in the
New York metro area as well as in the city. The counties are Rockland, Orange,
Sullivan, and the latest, Nassau. These studies were done in April, May, June,
July and August.
Pharmacists, midwives and other health workers will join the drive to boost
the immunization rate. Those unvaccinated have been told to receive their shots
immediately. Certain category of people will also receive a single, lifetime
booster dose. They are people who might have had contact with someone infected
or thought to be infected with poliovirus or members of the infected person’s
household and the health workers concerned.
What is polio
Polio (poliomyelitis) is a highly contagious viral infection caused by a type
of enterovirus. It is characterized by paralysis or weakness in arms, legs or
both. There have been no cases of wild type polio acquired in the US since 1979,
the health department said.
Transmission & fatality
Polio spreads among people when the virus enters the mouth, typically through
hands or objects contaminated with the stool of an infected person. It is important
to wash your hands frequently, especially after using the bathroom or changing
diapers. It is also possible to spread the virus through saliva and respiratory
droplets.
A person can spread the virus before and up to two weeks after they first have
symptoms. However, patients can spread disease as long as the virus is in their
feces or saliva. It can spread from people even if they do not have any symptoms
(asymptomatic).
The virus also spreads asymptomatically as 70% of people infected do not show
symptoms, only 25% of those infected develop mild symptoms similar to the flu.
Only one in 100 people infected develop severe disease such as permanent paralysis.
Polio is fatal in 2% to 10% of people suffering from paralysis because the muscles
used to breathe are immobilized.
Symptoms
Most people infected with the virus do not have any symptoms. One in four
people with an infection will have flu-like symptoms, such as: Sore throat,
Fever, Tiredness, Nausea and stomach pain.One in 25 people with an infection
will get viral meningitis, and about one in 200 people will have paralysis.
Symptoms may start to appear three to six days after exposure. Paralysis can
occur between seven and 21 days after exposure.
Paralysis
Polio can leave you permanently unable to move parts of your body. It most
commonly paralyzes the legs. In severe cases, polio can paralyze the muscles
you use to breathe or swallow. This can cause death.
Treatment
There is no specific medicine for polio treatment.
Polio vaccination
All children should receive four doses of the polio vaccine. The first dose
is administered between 6 weeks and 2 months of age, the second dose is given
at 4 months, the third at 6 months to 18 months, and the fourth dose at 4 to
6 years old, a health advisory said. Adults who have only received one or two
doses should get the remaining doses.
Those starting the vaccine series late should also receive all the doses. People
who are not vaccinated can get polio at any age.
In the US, one can get the inactivated polio vaccine. This vaccine is safe
and effective. Side effects are mild, including soreness of the arm or leg at
the injection site. It cannot give polio or cause paralysis. The oral vaccine
may not be as effective as the strain has changed. The US stopped using the
oral vaccine more than two decades ago.
The polio vaccination rate is alarmingly low in some New York counties. The
vaccination rate is 60% in Rockland, 58% in Orange, 62% in Sullivan and 79%
in Nassau, according to the health department. The statewide average for polio
immunization is about 79%.
Most adults in the US do not need to be vaccinated against polio again because
they were already vaccinated as children.