Dengue
Revisited
Dr KK Aggarwal
Napoleon Hill once
said that “Most great people have attained their
greatest success just one step beyond their greatest failure.”
It’s time for all
of us to convert our biggest failure, to control mosquito menace, into success.
Today dengue is in
alarming condition in Kerala, West Bengal, Karnataka and a mysterious illness
in Indore (? Zika ? Alpha Virus) with arthritis.
We all must agree
that collectively we have failed in controlling the mosquito menace. Any mosquito
container index above 5% requires community integrated cluster approach for
mosquito density reduction together with effective anti-larval measures.
Mosquito repellent impregnated mosquito nets are not available to patients.
Anti-larval measures such as temephos (an organophosphate larvicide) and
mosquito fish or Gambusia (a freshwater fish) also are not available to a
common man.
Then what is the
answer? We need a paradigm shift in our thinking.
We need to over
report and act in time. There is no point acting when the cases have started.
Often the civic bodies publically act during monsoon season. They may be
planning ahead but public awareness and public involvement must start much
ahead of time. Even the recent CAG report mentions that under reporting of
dengue is disastrous to the society.
We need to act on
all mosquitos - Aedes, Culex and Anopheles. Acting only on Aedes will not work.
The campaign that
“Aedes is a day biter and only breeds in indoor fresh water” will not work.
Even if this is true, then by killing Aedes you may end up increasing the
density of Culex and malaria causing Anopheles mosquito. But the fact is that
Aedes can breed and bite in the evening or night also.
Culex mosquito,
which causes filarial and Japanese encephalitis, is already rampant in many
states.
Aedes, which causes
Chikungunya, West Nile, Zika and Dengue can spread by the bite of infected
female Aedes aegypti (indoor) or A. albipecto (outdoor) mosquito.
It is true that
Aedes aegypti are more dangerous because they can fly up to 200 m and only feed
on human blood whereas the Aedes albopictus that thrives outdoors can only fly
as far as 80 m and feed on animal blood other than human blood. However, the
outdoor Aedes cannot be ignored.
The entire campaign
until now has focused on Aedes being a day biter, wear long sleeved clothing
during the day and no need to use night mosquito nets. But precautions need to
be taken all through the day. The mosquito only recognizes the light and not
day or night.
That the mosquito
only breeds in clear water also needs to be re-learnt. Aedes breeds in stagnant
water anywhere inside or outside the house. Rain water is the most important
source and can collect in any plastic container inside or outside the house.
Even collected garbage in open areas can have left over plastic cups or tiny
bottle caps with collected rainy water collections providing ideal atmosphere
for mosquito breeding.
It is true that
disease-spreading mosquitoes do not make noise but noise-producing nuisance
mosquitoes unless addressed will not create a public movement.
The law says that
dengue and Chikungunya are notifiable diseases, but one can
notify within seven days of diagnosis. Aedes mosquito takes up to
three meals in a day and by seven days will bite over 21 people in the
vicinity. Municipal anti-mosquito and anti-larval actions must occur within
hours of its detection. The very purpose of notification is lost if the disease
is not notified within hours of even suspected cases.
All suspected cases
must be reported without waiting for confirmation of the diagnosis. We have
failed because the government has been insisting on notification of only ELISA
confirmed cases.
An SMS should be
sent to all doctors practicing in that PIN code area with a case so that they
can become a part of the public health action chain.
All public health
measures should start right when the first case is suspected in a state, colony
or house. An SMS should go to the local councillor, MLA, MPs, all practicing
doctors, local chemists, NGOs, RWAs, local IMA Branch, State IMA Branch, IMA
Headquarters and other Specialty Organizations to join the public health chain
efforts.
It has taken over a
decade for us doctors to understand that dengue 1 and 3 strains are not dangerous
and causes only platelet deficiency with thinning of blood and dengue 2 and 4
strains are dangerous as they lead to platelet destruction along with
thickening of blood due to capillary leakage and rise in hematocrit.
Platelet
transfusion is not required in absence of active bleeding and thickening of
blood. Timely fluid resuscitation is more important and not platelet
resuscitation. Remember a raid fall in platelets along with a rapid rise
on hematocrit is dangerous and not rapid fall of platelets alone.
Dengue becomes
serious when fever is subsiding. We admit dengue cases with high fever and
always are in an urgency to discharge them when fever was subsiding.
Now we know that
the machine reading of platelet count can be defective. There can be an error
of 20%. A platelet count of 10,000 by machine reading can mean that the
platelet count is actually 50,000.
Hospital beds
should be reserved only for severe dengue and severe Chikungunya cases. Just
because one can claim reimbursement in Mediclaim or PSU, one should not be
admitted. If it was the US, Medicare by now would have come out with admission
guidelines.
The message has
been going that fogging has no answer. But at this stage of container index of
> 40, we need not just ground fogging, but also aerial fogging.
When Zika threat
came up Brazil, they deployed army to join and made it a public movement. All
political parties reach every house during election process then why can’t each
one of them reach every house and make the anti-mosquito and anti-larval
measures more effective.
Breeding checkers
are only with Municipal Corporation and they also have regulatory powers to put
fine. We need breeding checkers in private sector also. The Skill development
Ministry should start courses so that anyone can hire a breeding checker on
weekly basis to check their premises.
Community approach
means that 100% of the society talks about dengue. Every premise must write
that their premises are mosquito free. When you are invited to someone you should
ask “I hope your premises are mosquito free” and when you invite somebody write
“Welcome to my house and it is mosquito free”.
Even today most
hospitals do not provide mosquito nets to dengue or Chikungunya patients. It is
true they may be having anti- larval mesh doors or mesh windows but for
secondary prevention of dengue or Chikungunya we need to ensure that medial
establishments are certified as mosquito-free.
In flats or
apartments, the mosquitoes may be breeding in the roof top belonging to one of
the owners and if he is out of station for a holiday, the anti-larval measures
may remain deficient. The RWAs may use their powers to check all unoccupied or
closed premises including hostels, hotels and construction places in that
premises.
One of the five
great vows of Jainism is Non-attachment/Non-possession or Aparigraha. It
talks about not storing unwanted things. But in today’s era our roofs, verandas
and courtyards are full of left over tires, utensils, plastic utensils etc. We
buy a new car tire and keep the old one on our roof top. We need to change this
habit.
We have forgotten
to plant Tulsi and Peepal in our premises and stopped the daily Yagna, all
which have anti-mosquito properties.
The new strategy
must focus on small collections of water like in bottle caps, finding
mosquitoes lower in the room under the table or the bed, to look for them in
all three parts of the house roof tops, verandas and inside the rooms,
including unused toilets accessories.
Also, the slogan to
check your house once a week needs a change. One needs to be alert every day.
It should be a part of your daily routine. You do not clean your premises once
a week. Make it a habit to look for the breeding places every day.
The innovative
approach should be a war against indoor or outdoor mosquitoes; fresh
stagnant or dirty water mosquitoes; in small containers like bottle caps or
large containers like overhead tankers; made of mud or plastic; throughout
the day (early morning fogging when pupa hatch for Aedes, late night for
malaria); rub cleaning the utensils
Indian Medical
Association (IMA) and Heart Care Foundation of India (HCFI) slogan is
“Katwayega to nahi” i.e. whenever you someone ask “I hope your premises are
mosquito free”. Also, when you invite somebody at home say, “You are invited at
my home and I have checked there are no mosquitos”.
Remember
the slogan: “Ghar ke andar or ghar ke bahar; din me or rat me, deewaron ke
niche or upar, chote pani or bade pani ke collection me, eggs larve or
mosquito, teeno ko maro.”
Disclaimer: The views expressed in this write up are entirely my own.